One number in the following sequence is not correct ? $4,8,12,16,24$ Suggest the change that will correct the sequence

Question

$\begin{array}{1 1} \text{19 should be replaced by 22} \\ \text{16 should be replaced by 14} \\ \text{19 should be replaced by 20} \\ \text{16 should be replaced by 18} \end{array}$