Home / 11,169.12-15,414.18-7,385.72

Finding the Fourth Proportional to 11,169.12, 15,414.18 and 7,385.72

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Solution

The fourth proportional to 11,169.12, 15,414.18 and 7,385.72 is: 10,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.12 : 15,414.18 = 7,385.72 : x
  2. Step 2: Convert to fraction form
    11,169.12/15,414.18 = 7,385.72/x
  3. Step 3: Cross multiply
    11,169.12x = 15,414.18 × 7,385.72
  4. Step 4: Simplify right side
    11,169.12x = 113,844,740.44
  5. Step 5: Solve for x
    x = 113,844,740.44/11,169.12
  6. Step 6: Final answer
    x = 10,192.81

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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.