4. (5 points) Xiao Pang and Xiao Ya have a total of 66 science books and 92 story books. Among them, Xiao Pang's science books are twice as many as Xiao Ya's, and Xiao Ya's story books are three times as many as Xiao Pang's. How many more books does Xiao Ya have than Xiao Pang? $\qquad$ books.
【Solution】Solution: $66 \div(2+1)=22$ (books)
$$
\begin{array}{l}
66-22=44 \text { (books) } \\
92 \div(1+3)=23 \text { (books) } \\
92-23=69 \text { (books) } \\
22+69=91 \text { (books) } \\
44+23=37 \text { (books) } \\
91-67=24 \text { (books) }
\end{array}
$$

Answer: Xiaoya has 24 more books than Xiaopang.
Therefore, the answer is: 24.