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Sergeeva-Olga [200]
3 years ago
13

K/6 = 15/18 Solve the proportion

Mathematics
2 answers:
Ilya [14]3 years ago
8 0

Answer:

k = 5

Step-by-step explanation:

<u>Step 1:  Cross multiply</u>

k/6 = 15/18

k(18) = 6(15)

<em>18k = 90</em>

<u>Step 2:  Divide both sides by 18</u>

18k / 18 = 90 / 18

<em>k = 5</em>

Answer:  k = 5

<u>Another way to do it is to multiply both sides by 6</u>

k/6 * 6 = 15/18 * 6

k = 90 / 18

<em>k = 5</em>

muminat3 years ago
7 0

Answer: 5

Step-by-step explanation: To solve for <em>k</em> in the given proportion, we use the means-extremes property. The product of the extremes, (k)(18), equals the product of the means, (6)(15).

So we have (k)(18) or 18k = (6)(15) or 90.

Now we have the equation 18k = 90.

Dividing both sides by 18, <em>k = 5</em>.

It's a good idea to check the answer in these types of problems so if we plug a 5 back in for <em>k</em> in the original proportion, we have \frac{(5)}{6}= \frac{15}{18} which is a true statement since 15/18 reduces to 5/6.

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