The Art Fund International had allowed it to build its collection of contemporary art for the past five years.
Photographs, films, performance and installation works by artists from Germany, North America, Ireland and Slovakia are among the purchases.
They include an important film called Continuity by the Israeli-born, Berlin-based artist Omer Fast.
Other purchases include a work by Slovakian artist Roman Ondák, a watercolour painting by American artist Spencer Finch and an installation by Irish artist Gerard Byrne.
Glasgow's final purchase through Art Fund International is a collection of 15 photographs by the Turner Prize-winning artist Wolfgang Tillmans.
Displays are planned to begin in October.