allery$4$, $9$ आणि $12$ चे चौथे प्रमाणपद शोधा.
A$18$
B$21$
C$24$
D$27$
Answer & Solution
Correct answer: D. $27$
जर $4 : 9 = 12 : x$ असेल, तर अंत्यपदांचा गुणाकार = मध्यमपदांचा गुणाकार या नियमानुसार, $4x = 9 \times 12 = 108$, म्हणून $x = 27$.
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