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Finding the Fourth Proportional to 20,351,927.20, 28,568,280.80 and 20,351,927.20

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Solution

The fourth proportional to 20,351,927.20, 28,568,280.80 and 20,351,927.20 is: 28,568,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351,927.20 : 28,568,280.80 = 20,351,927.20 : x
  2. Step 2: Convert to fraction form
    20,351,927.20/28,568,280.80 = 20,351,927.20/x
  3. Step 3: Cross multiply
    20,351,927.20x = 28,568,280.80 × 20,351,927.20
  4. Step 4: Simplify right side
    20,351,927.20x = 581,419,571,070,757.75
  5. Step 5: Solve for x
    x = 581,419,571,070,757.75/20,351,927.20
  6. Step 6: Final answer
    x = 28,568,280.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.