Home / 42,372.80-63,545.20-14,285.28

Finding the Fourth Proportional to 42,372.80, 63,545.20 and 14,285.28

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Solution

The fourth proportional to 42,372.80, 63,545.20 and 14,285.28 is: 21,423.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,372.80 : 63,545.20 = 14,285.28 : x
  2. Step 2: Convert to fraction form
    42,372.80/63,545.20 = 14,285.28/x
  3. Step 3: Cross multiply
    42,372.80x = 63,545.20 × 14,285.28
  4. Step 4: Simplify right side
    42,372.80x = 907,760,974.66
  5. Step 5: Solve for x
    x = 907,760,974.66/42,372.80
  6. Step 6: Final answer
    x = 21,423.20

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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.