Home / 20,473.38-28,253.22-11,520.90

Finding the Fourth Proportional to 20,473.38, 28,253.22 and 11,520.90

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Solution

The fourth proportional to 20,473.38, 28,253.22 and 11,520.90 is: 15,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.38 : 28,253.22 = 11,520.90 : x
  2. Step 2: Convert to fraction form
    20,473.38/28,253.22 = 11,520.90/x
  3. Step 3: Cross multiply
    20,473.38x = 28,253.22 × 11,520.90
  4. Step 4: Simplify right side
    20,473.38x = 325,502,522.30
  5. Step 5: Solve for x
    x = 325,502,522.30/20,473.38
  6. Step 6: Final answer
    x = 15,898.82

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1.5x scale

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.