Finding the Fourth Proportional to 18,144,893.70, 27,217,340.55 and 13,665,917.70
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Solution
The fourth proportional to 18,144,893.70, 27,217,340.55 and 13,665,917.70 is: 20,498,876.55
Step by Step Solution
- Step 1: Write the proportion equation
18,144,893.70 : 27,217,340.55 = 13,665,917.70 : x - Step 2: Convert to fraction form
18,144,893.70/27,217,340.55 = 13,665,917.70/x - Step 3: Cross multiply
18,144,893.70x = 27,217,340.55 × 13,665,917.70 - Step 4: Simplify right side
18,144,893.70x = 371,949,935,969,172.75 - Step 5: Solve for x
x = 371,949,935,969,172.75/18,144,893.70 - Step 6: Final answer
x = 20,498,876.55
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1.5x scale
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.