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Finding the Fourth Proportional to 8,858,697.70, 13,288,046.55 and 8,690,736.10

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Solution

The fourth proportional to 8,858,697.70, 13,288,046.55 and 8,690,736.10 is: 13,036,104.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858,697.70 : 13,288,046.55 = 8,690,736.10 : x
  2. Step 2: Convert to fraction form
    8,858,697.70/13,288,046.55 = 8,690,736.10/x
  3. Step 3: Cross multiply
    8,858,697.70x = 13,288,046.55 × 8,690,736.10
  4. Step 4: Simplify right side
    8,858,697.70x = 115,482,905,850,565.45
  5. Step 5: Solve for x
    x = 115,482,905,850,565.45/8,858,697.70
  6. Step 6: Final answer
    x = 13,036,104.15

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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.