Finding the Fourth Proportional to 21,480,893.75, 29,644,261.92 and 11,691,972.06
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Solution
The fourth proportional to 21,480,893.75, 29,644,261.92 and 11,691,972.06 is: 16,135,263.56
Step by Step Solution
- Step 1: Write the proportion equation
21,480,893.75 : 29,644,261.92 = 11,691,972.06 : x - Step 2: Convert to fraction form
21,480,893.75/29,644,261.92 = 11,691,972.06/x - Step 3: Cross multiply
21,480,893.75x = 29,644,261.92 × 11,691,972.06 - Step 4: Simplify right side
21,480,893.75x = 346,599,882,107,962 - Step 5: Solve for x
x = 346,599,882,107,962/21,480,893.75 - Step 6: Final answer
x = 16,135,263.56
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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.