Home / 15,215,073.12-20,997,321.12-8,339,553.60

Finding the Fourth Proportional to 15,215,073.12, 20,997,321.12 and 8,339,553.60

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Solution

The fourth proportional to 15,215,073.12, 20,997,321.12 and 8,339,553.60 is: 11,508,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215,073.12 : 20,997,321.12 = 8,339,553.60 : x
  2. Step 2: Convert to fraction form
    15,215,073.12/20,997,321.12 = 8,339,553.60/x
  3. Step 3: Cross multiply
    15,215,073.12x = 20,997,321.12 × 8,339,553.60
  4. Step 4: Simplify right side
    15,215,073.12x = 175,108,284,936,652.03
  5. Step 5: Solve for x
    x = 175,108,284,936,652.03/15,215,073.12
  6. Step 6: Final answer
    x = 11,508,869.10

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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.