Finding the Fourth Proportional to 18,189,943.70, 27,284,915.55 and 8,624,005.70
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Solution
The fourth proportional to 18,189,943.70, 27,284,915.55 and 8,624,005.70 is: 12,936,008.55
Step by Step Solution
- Step 1: Write the proportion equation
18,189,943.70 : 27,284,915.55 = 8,624,005.70 : x - Step 2: Convert to fraction form
18,189,943.70/27,284,915.55 = 8,624,005.70/x - Step 3: Cross multiply
18,189,943.70x = 27,284,915.55 × 8,624,005.70 - Step 4: Simplify right side
18,189,943.70x = 235,305,267,227,218.62 - Step 5: Solve for x
x = 235,305,267,227,218.62/18,189,943.70 - Step 6: Final answer
x = 12,936,008.55
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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.