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Finding the Fourth Proportional to 10,380.66, 15,550.92 and 8,694.77

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Solution

The fourth proportional to 10,380.66, 15,550.92 and 8,694.77 is: 13,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.66 : 15,550.92 = 8,694.77 : x
  2. Step 2: Convert to fraction form
    10,380.66/15,550.92 = 8,694.77/x
  3. Step 3: Cross multiply
    10,380.66x = 15,550.92 × 8,694.77
  4. Step 4: Simplify right side
    10,380.66x = 135,211,594.93
  5. Step 5: Solve for x
    x = 135,211,594.93/10,380.66
  6. Step 6: Final answer
    x = 13,025.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.