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Finding the Fourth Proportional to 10,387,563.54, 15,652,247.95 and 8,535,786.90

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Solution

The fourth proportional to 10,387,563.54, 15,652,247.95 and 8,535,786.90 is: 12,861,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387,563.54 : 15,652,247.95 = 8,535,786.90 : x
  2. Step 2: Convert to fraction form
    10,387,563.54/15,652,247.95 = 8,535,786.90/x
  3. Step 3: Cross multiply
    10,387,563.54x = 15,652,247.95 × 8,535,786.90
  4. Step 4: Simplify right side
    10,387,563.54x = 133,604,253,007,161.86
  5. Step 5: Solve for x
    x = 133,604,253,007,161.86/10,387,563.54
  6. Step 6: Final answer
    x = 12,861,943.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.