Finding the Fourth Proportional to 11,342,421.20, 15,654,058.44 and 7,212,855.44
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Solution
The fourth proportional to 11,342,421.20, 15,654,058.44 and 7,212,855.44 is: 9,954,705.31
Step by Step Solution
- Step 1: Write the proportion equation
11,342,421.20 : 15,654,058.44 = 7,212,855.44 : x - Step 2: Convert to fraction form
11,342,421.20/15,654,058.44 = 7,212,855.44/x - Step 3: Cross multiply
11,342,421.20x = 15,654,058.44 × 7,212,855.44 - Step 4: Simplify right side
11,342,421.20x = 112,910,460,577,031.92 - Step 5: Solve for x
x = 112,910,460,577,031.92/11,342,421.20 - Step 6: Final answer
x = 9,954,705.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.