Question

Find the value of x in each of the following proportion:​
(iii) $4:6=x:18$

Answer 1

The given proportion can be calculated for the value of $x$ as follows

$4:6=x:18$

$\Rightarrow$ $\frac{4}{6}=\frac{x}{18}$

$\Rightarrow$ $4\times 18=x\times 6$

($\because$ $\text{Product of extremes}$ $=\text{Product of means}$)

$\Rightarrow$ $x=\frac{4\times 18}{6}=\frac{4\times 6\times 3}{6}=2\times 6$

$\therefore$ $x=12$

Hence , the value of $x$ $\text{is}12$.