Reuse output from command 1 in command 2 using a pipe

I've got a command in linux which returns a list of numbers. Now I need this numbers to form a directory path and cat the file located at that path. For example: myCommand returns:

1 
10
30 
40

And I want to cat all the files that look like this:

 /folder/1/folder2 
 /folder/10/folder2 
 /folder/30/folder2
 /folder/40/folder2

I Hope it is clear what I want, if not, feel free to ask. This is my code right now:

 myCommand | xargs cat

But it obviously doesn't work since directory 1,10,30 and 40 doesn't exist.

I want the output to be: the catted value - number generated by myCommand