Home / 12,139.14-16,761.42-9,481.92

Finding the Fourth Proportional to 12,139.14, 16,761.42 and 9,481.92

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Solution

The fourth proportional to 12,139.14, 16,761.42 and 9,481.92 is: 13,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.14 : 16,761.42 = 9,481.92 : x
  2. Step 2: Convert to fraction form
    12,139.14/16,761.42 = 9,481.92/x
  3. Step 3: Cross multiply
    12,139.14x = 16,761.42 × 9,481.92
  4. Step 4: Simplify right side
    12,139.14x = 158,930,443.53
  5. Step 5: Solve for x
    x = 158,930,443.53/12,139.14
  6. Step 6: Final answer
    x = 13,092.40

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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.