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# Numbers

What is the value of X in the proportion 9:15:X

[A] 18

[B] 20

[C] 25

Note by Vamshi Krishna
3 years, 4 months ago

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The given proportion is a continuous proportion.

Therefore, $$9 \times X$$ = $$15^2$$

Hence, X= $$\frac{225}{9}$$ = 25 · 3 years, 4 months ago

15/9 *15 = 25 · 3 years, 4 months ago

9/15=0.6 15/25=0.6 Value of X is 25 · 3 years, 4 months ago