Home / 31,781.12-43,863.21-17,638.52

Finding the Fourth Proportional to 31,781.12, 43,863.21 and 17,638.52

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Solution

The fourth proportional to 31,781.12, 43,863.21 and 17,638.52 is: 24,344.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.12 : 43,863.21 = 17,638.52 : x
  2. Step 2: Convert to fraction form
    31,781.12/43,863.21 = 17,638.52/x
  3. Step 3: Cross multiply
    31,781.12x = 43,863.21 × 17,638.52
  4. Step 4: Simplify right side
    31,781.12x = 773,681,887.53
  5. Step 5: Solve for x
    x = 773,681,887.53/31,781.12
  6. Step 6: Final answer
    x = 24,344.08

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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.