Question

ajudem pfv calcule a quarta proporcional dos numeros
$\frac{6}{18} \frac{15}{x}$

Answer 1

$\frac{6}{18} = \frac{15}{x} \\ 6 \times x = 15 \times 18 \\ 6x = 270 \\ x = 270 \div 6 \\ x = 45$