Home / 31,757.44-43,805.28-20,578.72

Finding the Fourth Proportional to 31,757.44, 43,805.28 and 20,578.72

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Solution

The fourth proportional to 31,757.44, 43,805.28 and 20,578.72 is: 28,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,757.44 : 43,805.28 = 20,578.72 : x
  2. Step 2: Convert to fraction form
    31,757.44/43,805.28 = 20,578.72/x
  3. Step 3: Cross multiply
    31,757.44x = 43,805.28 × 20,578.72
  4. Step 4: Simplify right side
    31,757.44x = 901,456,591.64
  5. Step 5: Solve for x
    x = 901,456,591.64/31,757.44
  6. Step 6: Final answer
    x = 28,385.68

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1.5x scale

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.