South Georgia and South Sandwich Islands is about 24 times smaller than Portugal.

Portugal is approximately 92,090 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 4.24% the size of Portugal.
Tip: This to-scale comparison of Portugal vs. South Georgia and South Sandwich Islands uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: South Georgia and South Sandwich Islands vs. Portugal