Home / 42,003.92-57,897.84-28,387.70

Finding the Fourth Proportional to 42,003.92, 57,897.84 and 28,387.70

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Solution

The fourth proportional to 42,003.92, 57,897.84 and 28,387.70 is: 39,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,003.92 : 57,897.84 = 28,387.70 : x
  2. Step 2: Convert to fraction form
    42,003.92/57,897.84 = 28,387.70/x
  3. Step 3: Cross multiply
    42,003.92x = 57,897.84 × 28,387.70
  4. Step 4: Simplify right side
    42,003.92x = 1,643,586,512.57
  5. Step 5: Solve for x
    x = 1,643,586,512.57/42,003.92
  6. Step 6: Final answer
    x = 39,129.36

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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.