Home / 31,248.52-43,125.10-20,619.68

Finding the Fourth Proportional to 31,248.52, 43,125.10 and 20,619.68

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Solution

The fourth proportional to 31,248.52, 43,125.10 and 20,619.68 is: 28,456.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,248.52 : 43,125.10 = 20,619.68 : x
  2. Step 2: Convert to fraction form
    31,248.52/43,125.10 = 20,619.68/x
  3. Step 3: Cross multiply
    31,248.52x = 43,125.10 × 20,619.68
  4. Step 4: Simplify right side
    31,248.52x = 889,225,761.97
  5. Step 5: Solve for x
    x = 889,225,761.97/31,248.52
  6. Step 6: Final answer
    x = 28,456.57

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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.