Home / 42,151.90-63,232.10-13,687.66

Finding the Fourth Proportional to 42,151.90, 63,232.10 and 13,687.66

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Solution

The fourth proportional to 42,151.90, 63,232.10 and 13,687.66 is: 20,532.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,151.90 : 63,232.10 = 13,687.66 : x
  2. Step 2: Convert to fraction form
    42,151.90/63,232.10 = 13,687.66/x
  3. Step 3: Cross multiply
    42,151.90x = 63,232.10 × 13,687.66
  4. Step 4: Simplify right side
    42,151.90x = 865,499,135.51
  5. Step 5: Solve for x
    x = 865,499,135.51/42,151.90
  6. Step 6: Final answer
    x = 20,532.86

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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.