Calculate the third proportional to 4, 15 and 24.

$\frac{32}{5}$ $\frac{29}{5}$ $\frac{21}{5}$ $\frac{26}{5}$

$\frac{32}{5}$

4 : 15 :: x : 24 The third proportion x, ⇒ 15x = 24 x 4 ⇒ 15x = 96 ⇒ x = \(\frac{96}{15}\) = \(\frac{32}{5}\)