Finding the Fourth Proportional to 18,678,627.24, 27,991,603.80 and 8,820,171.90
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Solution
The fourth proportional to 18,678,627.24, 27,991,603.80 and 8,820,171.90 is: 13,217,821.32
Step by Step Solution
- Step 1: Write the proportion equation
18,678,627.24 : 27,991,603.80 = 8,820,171.90 : x - Step 2: Convert to fraction form
18,678,627.24/27,991,603.80 = 8,820,171.90/x - Step 3: Cross multiply
18,678,627.24x = 27,991,603.80 × 8,820,171.90 - Step 4: Simplify right side
18,678,627.24x = 246,890,757,272,693.25 - Step 5: Solve for x
x = 246,890,757,272,693.25/18,678,627.24 - Step 6: Final answer
x = 13,217,821.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.