I'm getting some monitors that have Balanced XLR ins (no 1/4").

My soundcard has only 1/4" unbalanced analog outputs on standard 1/4” TS connectors.

Will this be a problem to find cables with XLR to the 1/4 "? And will it be a problem (i.e. sound degradation) to mix a balanced with an unbalanced connection?

Thanks for any input or output you can give?