Question

If 12,18,x and 39 are in proportion find the value of x

Answer 1

To find : the value of $x$.

Given : $12 , 18 , x \ and\ 39$ are in proportion .

Solution :

• As we can see that in the given ratio of proportion one of the  ratio is missing.

• To find missing ratio we can write $12: 18:: x: 39$

        as, $\frac{12}{18}=\frac{x}{39}$

• Transposing like terms we get,

     $\Rightarrow \quad x=\frac{12 \times 39}{18}$

• On simplifying we get,

     $\begin{array}{l}\Rightarrow x=2\times 13 \\\Rightarrow x=26\end{array}$

Hence, value of $x$ is $26$ .

Answer 2

Answer:

The value of $x$ is $26 .$

Step-by-step explanation:

The given ratio of proportion one of the  ratio is missing.

$12,18,x$ and $39$

To find missing ratio

So, it can write as $12: 18:: x: 39$

So, $\frac{12}{18}=\frac{x}{39}$

Transposing like terms,

$\Rightarrow \ x=\frac{12 \times 39}{18}$

$\Rightarrow x=2 \times 13$

$\Rightarrow x=26$

Hence the value of $x$ is $26.$