Finding the Fourth Proportional to 15,691,830.24, 21,654,984.78 and 8,627,722.02
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Solution
The fourth proportional to 15,691,830.24, 21,654,984.78 and 8,627,722.02 is: 11,906,398.82
Step by Step Solution
- Step 1: Write the proportion equation
15,691,830.24 : 21,654,984.78 = 8,627,722.02 : x - Step 2: Convert to fraction form
15,691,830.24/21,654,984.78 = 8,627,722.02/x - Step 3: Cross multiply
15,691,830.24x = 21,654,984.78 × 8,627,722.02 - Step 4: Simplify right side
15,691,830.24x = 186,833,189,029,170.84 - Step 5: Solve for x
x = 186,833,189,029,170.84/15,691,830.24 - Step 6: Final answer
x = 11,906,398.82
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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.