You can open the 'Edit → XML Editor...', copy the
transform-attribute and paste it on the other object. It works best when the original was only skewed and not scaled or rotated as well.
Select your object and copy the value of the attribute:
Select the second object, click the '+' in the top-left, enter
transform for the attribute name and paste the value:
You may have to adjust the position, but the skew should now be the same:
Alternatively, you can use the 'Object → Transform...' panel switched to the 'Matrix' tab.
Select your first object, check the 'Edit current matrix' box and write down the values in the six input boxes. Then select your second object, disable the 'Edit current matrix' setting, enter the six values and click apply.