Finding the Fourth Proportional to 18,218,105.07, 25,124,702.47 and 15,115,717.18
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Solution
The fourth proportional to 18,218,105.07, 25,124,702.47 and 15,115,717.18 is: 20,846,179.96
Step by Step Solution
- Step 1: Write the proportion equation
18,218,105.07 : 25,124,702.47 = 15,115,717.18 : x - Step 2: Convert to fraction form
18,218,105.07/25,124,702.47 = 15,115,717.18/x - Step 3: Cross multiply
18,218,105.07x = 25,124,702.47 × 15,115,717.18 - Step 4: Simplify right side
18,218,105.07x = 379,777,896,768,167.44 - Step 5: Solve for x
x = 379,777,896,768,167.44/18,218,105.07 - Step 6: Final answer
x = 20,846,179.96
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1.5x scale
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.