Home / 20,824.11-28,737.19-11,392.66

Finding the Fourth Proportional to 20,824.11, 28,737.19 and 11,392.66

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Solution

The fourth proportional to 20,824.11, 28,737.19 and 11,392.66 is: 15,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.11 : 28,737.19 = 11,392.66 : x
  2. Step 2: Convert to fraction form
    20,824.11/28,737.19 = 11,392.66/x
  3. Step 3: Cross multiply
    20,824.11x = 28,737.19 × 11,392.66
  4. Step 4: Simplify right side
    20,824.11x = 327,393,035.03
  5. Step 5: Solve for x
    x = 327,393,035.03/20,824.11
  6. Step 6: Final answer
    x = 15,721.83

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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.