Home / 12,091.12-16,691.16-7,377.28

Finding the Fourth Proportional to 12,091.12, 16,691.16 and 7,377.28

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Solution

The fourth proportional to 12,091.12, 16,691.16 and 7,377.28 is: 10,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.12 : 16,691.16 = 7,377.28 : x
  2. Step 2: Convert to fraction form
    12,091.12/16,691.16 = 7,377.28/x
  3. Step 3: Cross multiply
    12,091.12x = 16,691.16 × 7,377.28
  4. Step 4: Simplify right side
    12,091.12x = 123,135,360.84
  5. Step 5: Solve for x
    x = 123,135,360.84/12,091.12
  6. Step 6: Final answer
    x = 10,183.95

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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.