Question

If 12,14,9and x are in proportion then find the value of x

Answer 1

12,14,9and x are in proportion then

$\frac{12}{14} = \frac{9}{x} \\ x = \frac{9}{12} \times 14 \\ x = \frac{3}{4} \times 14 \\ x = \frac{3}{2} \times 7 = \frac{21}{2} = 10.5$

Answer 2

Answer:

21/2

Step-by-step explanation:

in a proportion,the product of extremes=product of means

so, 12×x=14×9 ⇒ x=14×9/12 =21/2

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