The Collaborative International Dictionary
Proportionable \Pro*por"tion*a*ble\, a. Capable of being proportioned, or made proportional; also, proportional; proportionate. -- Pro*por"tion*a*ble*ness, n.
But eloquence may exist without a proportionable degree
of wisdom.
--Burke.
Proportionable, which is no longer much favored, was of
our [i. e., English writers'] own coining.
--Fitzed.
Hall.
Wiktionary
a. Capable of being proportioned, or made proportional.
WordNet
adj. proportionate
Usage examples of "proportionable".
After twenty years' service, the veteran received three thousand denarii, (about one hundred pounds sterling,) or a proportionable allowance of land.
It is, for instance, a good deal more than the proportionable population of this island, or even than that of England, the best peopled part of the United Kingdom.