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3 years ago

K/6 = 15/18 Solve the proportion

Mathematics

2 answers:

Ilya [14]3 years ago

8 0

Answer:

k = 5

Step-by-step explanation:

Step 1: Cross multiply

k/6 = 15/18

k(18) = 6(15)

18k = 90

Step 2: Divide both sides by 18

18k / 18 = 90 / 18

k = 5

Answer: k = 5

Another way to do it is to multiply both sides by 6

k/6 * 6 = 15/18 * 6

k = 90 / 18

k = 5

muminat3 years ago

7 0

Answer: 5

Step-by-step explanation: To solve for k 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, k = 5.

It's a good idea to check the answer in these types of problems so if we plug a 5 back in for k 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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