Home / 20,822.97-28,737.18-13,737.09

Finding the Fourth Proportional to 20,822.97, 28,737.18 and 13,737.09

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Solution

The fourth proportional to 20,822.97, 28,737.18 and 13,737.09 is: 18,958.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.97 : 28,737.18 = 13,737.09 : x
  2. Step 2: Convert to fraction form
    20,822.97/28,737.18 = 13,737.09/x
  3. Step 3: Cross multiply
    20,822.97x = 28,737.18 × 13,737.09
  4. Step 4: Simplify right side
    20,822.97x = 394,765,335.77
  5. Step 5: Solve for x
    x = 394,765,335.77/20,822.97
  6. Step 6: Final answer
    x = 18,958.16

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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.