Home / 11,366.11-15,680.80-8,380.86

Finding the Fourth Proportional to 11,366.11, 15,680.80 and 8,380.86

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Solution

The fourth proportional to 11,366.11, 15,680.80 and 8,380.86 is: 11,562.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,366.11 : 15,680.80 = 8,380.86 : x
  2. Step 2: Convert to fraction form
    11,366.11/15,680.80 = 8,380.86/x
  3. Step 3: Cross multiply
    11,366.11x = 15,680.80 × 8,380.86
  4. Step 4: Simplify right side
    11,366.11x = 131,418,589.49
  5. Step 5: Solve for x
    x = 131,418,589.49/11,366.11
  6. Step 6: Final answer
    x = 11,562.32

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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.