The fourth proportional to $7, 11, 14$ is

16

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18

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20

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22

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Solution

The correct option is B $22$
Let the fourth proportional be $x$
Therefore, $7 : 11 = 14 : x$
$\Rightarrow 7 x = 11 \times 14$
$\Rightarrow x = \frac{11 \times 14}{7} = 22$
Thus fourth proportional is $22$ .

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