Question

__:14=15:21 is a question for ratio. The_ is the answer needed

Answer 1

Answer:  The required missing number is 10.

Step-by-step explanation:  We are given to find the missing number in the following proportion :

$?:14=15:21.$

Let the missing number be represented by x.

Then, according to the given information, we have

$x:14=15:21\\\\\Rightarrow \dfrac{x}{14}=\dfrac{15}{21}\\\\\\\Rightarrow \dfrac{x}{14}=\dfrac{5}{7}\\\\\\\Rightarrow x=\dfrac{5}{7}\times14\\\\\Rightarrow x=10.$

Thus, the required missing number is 10.

Answer 2

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