Finding the Fourth Proportional to 20,712,197.13, 28,595,092.95 and 18,414,010.05
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Solution
The fourth proportional to 20,712,197.13, 28,595,092.95 and 18,414,010.05 is: 25,422,234.33
Step by Step Solution
- Step 1: Write the proportion equation
20,712,197.13 : 28,595,092.95 = 18,414,010.05 : x - Step 2: Convert to fraction form
20,712,197.13/28,595,092.95 = 18,414,010.05/x - Step 3: Cross multiply
20,712,197.13x = 28,595,092.95 × 18,414,010.05 - Step 4: Simplify right side
20,712,197.13x = 526,550,328,961,984.12 - Step 5: Solve for x
x = 526,550,328,961,984.12/20,712,197.13 - Step 6: Final answer
x = 25,422,234.33
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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.