Home / 31,553.80-43,545.25-18,127.75

Finding the Fourth Proportional to 31,553.80, 43,545.25 and 18,127.75

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Solution

The fourth proportional to 31,553.80, 43,545.25 and 18,127.75 is: 25,016.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,553.80 : 43,545.25 = 18,127.75 : x
  2. Step 2: Convert to fraction form
    31,553.80/43,545.25 = 18,127.75/x
  3. Step 3: Cross multiply
    31,553.80x = 43,545.25 × 18,127.75
  4. Step 4: Simplify right side
    31,553.80x = 789,377,299.16
  5. Step 5: Solve for x
    x = 789,377,299.16/31,553.80
  6. Step 6: Final answer
    x = 25,016.87

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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.