Primeiro vamos achar a taxa mensal proporcional de juros de 24% ao ano:
24 / 12 = 2% a.m.
Agora aplicamos a formula abaixo:
[tex]PMT = VP . \left[\begin{array}{ccc} \frac{i . (1+i)^{n}}{ (1+i)^{n}-1} \end{array}\right][/tex]
[tex]PMT = 22500 . \left[\begin{array}{ccc} \frac{0,02. (1+0,02)^{24}}{ (1+0,02)^{24}-1} \end{array}\right][/tex]
[tex]PMT = 22500 . \left[\begin{array}{ccc} \frac{0,02 . 1,60844}{ 1,60844-1 } \end{array}\right][/tex]
[tex]PMT = 22500 . \left[\begin{array}{ccc} \frac{0,03217}{0,60844} \end{array}\right][/tex]
[tex]PMT = 22500 . 0,05287[/tex]
[tex]PMT = 1189,60[/tex]