Question

Fine the value of y if y:9::14:21​

Answer 1

y = 6

Step-by-step explanation:

14:21 in lowest terms will be 2:3

and the nine in y:9; we get it by 3 (this 3 is coming from the proportion) ×3...

so 2 will also be multiplied with 3 = 2 x 3 =6

thus, y= 6

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Answer 2

Answer:

Given proportion of 2 ratios = y : 9 : : 14 : 21

Value of y = ?

We know that the product of means is equal to product of extremes which means a : b : : c : d is bc = ad

So, by applying that rule, we can easily find the value of y in the given proportion.

⇒ y : 9 : : 14 : 21

⇒ 9 x 14 = y x 21

⇒ 126 = 21y

⇒ 126/21 = y

⇒ 6 = y

∴The value of y in the given proportion is 6.

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