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Finding the Fourth Proportional to 22,660.40, 33,957.40 and 20,320.40

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Solution

The fourth proportional to 22,660.40, 33,957.40 and 20,320.40 is: 30,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,660.40 : 33,957.40 = 20,320.40 : x
  2. Step 2: Convert to fraction form
    22,660.40/33,957.40 = 20,320.40/x
  3. Step 3: Cross multiply
    22,660.40x = 33,957.40 × 20,320.40
  4. Step 4: Simplify right side
    22,660.40x = 690,027,950.96
  5. Step 5: Solve for x
    x = 690,027,950.96/22,660.40
  6. Step 6: Final answer
    x = 30,450.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.