Home / 20,472.13-28,259.85-13,304.44

Finding the Fourth Proportional to 20,472.13, 28,259.85 and 13,304.44

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Solution

The fourth proportional to 20,472.13, 28,259.85 and 13,304.44 is: 18,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.13 : 28,259.85 = 13,304.44 : x
  2. Step 2: Convert to fraction form
    20,472.13/28,259.85 = 13,304.44/x
  3. Step 3: Cross multiply
    20,472.13x = 28,259.85 × 13,304.44
  4. Step 4: Simplify right side
    20,472.13x = 375,981,478.73
  5. Step 5: Solve for x
    x = 375,981,478.73/20,472.13
  6. Step 6: Final answer
    x = 18,365.53

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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.