Home / 31,750.97-43,780.39-20,250.52

Finding the Fourth Proportional to 31,750.97, 43,780.39 and 20,250.52

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Solution

The fourth proportional to 31,750.97, 43,780.39 and 20,250.52 is: 27,922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,750.97 : 43,780.39 = 20,250.52 : x
  2. Step 2: Convert to fraction form
    31,750.97/43,780.39 = 20,250.52/x
  3. Step 3: Cross multiply
    31,750.97x = 43,780.39 × 20,250.52
  4. Step 4: Simplify right side
    31,750.97x = 886,575,503.23
  5. Step 5: Solve for x
    x = 886,575,503.23/31,750.97
  6. Step 6: Final answer
    x = 27,922.79

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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.