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Finding the Fourth Proportional to 10,987,796.70, 16,481,695.05 and 8,118,015.30

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Solution

The fourth proportional to 10,987,796.70, 16,481,695.05 and 8,118,015.30 is: 12,177,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987,796.70 : 16,481,695.05 = 8,118,015.30 : x
  2. Step 2: Convert to fraction form
    10,987,796.70/16,481,695.05 = 8,118,015.30/x
  3. Step 3: Cross multiply
    10,987,796.70x = 16,481,695.05 × 8,118,015.30
  4. Step 4: Simplify right side
    10,987,796.70x = 133,798,652,585,834.27
  5. Step 5: Solve for x
    x = 133,798,652,585,834.27/10,987,796.70
  6. Step 6: Final answer
    x = 12,177,022.95

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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.