Home / 28,330.43-42,506.10-11,691.90

Finding the Fourth Proportional to 28,330.43, 42,506.10 and 11,691.90

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Solution

The fourth proportional to 28,330.43, 42,506.10 and 11,691.90 is: 17,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.43 : 42,506.10 = 11,691.90 : x
  2. Step 2: Convert to fraction form
    28,330.43/42,506.10 = 11,691.90/x
  3. Step 3: Cross multiply
    28,330.43x = 42,506.10 × 11,691.90
  4. Step 4: Simplify right side
    28,330.43x = 496,977,070.59
  5. Step 5: Solve for x
    x = 496,977,070.59/28,330.43
  6. Step 6: Final answer
    x = 17,542.17

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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.