Home / 42,360.88-63,546.80-12,781.68

Finding the Fourth Proportional to 42,360.88, 63,546.80 and 12,781.68

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Solution

The fourth proportional to 42,360.88, 63,546.80 and 12,781.68 is: 19,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,360.88 : 63,546.80 = 12,781.68 : x
  2. Step 2: Convert to fraction form
    42,360.88/63,546.80 = 12,781.68/x
  3. Step 3: Cross multiply
    42,360.88x = 63,546.80 × 12,781.68
  4. Step 4: Simplify right side
    42,360.88x = 812,234,862.62
  5. Step 5: Solve for x
    x = 812,234,862.62/42,360.88
  6. Step 6: Final answer
    x = 19,174.17

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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.