Home / 20,952.13-28,914.45-11,520.69

Finding the Fourth Proportional to 20,952.13, 28,914.45 and 11,520.69

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Solution

The fourth proportional to 20,952.13, 28,914.45 and 11,520.69 is: 15,898.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.13 : 28,914.45 = 11,520.69 : x
  2. Step 2: Convert to fraction form
    20,952.13/28,914.45 = 11,520.69/x
  3. Step 3: Cross multiply
    20,952.13x = 28,914.45 × 11,520.69
  4. Step 4: Simplify right side
    20,952.13x = 333,114,414.97
  5. Step 5: Solve for x
    x = 333,114,414.97/20,952.13
  6. Step 6: Final answer
    x = 15,898.83

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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.