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Finding the Fourth Proportional to 11,080.80, 16,621.20 and 10,278.90

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Solution

The fourth proportional to 11,080.80, 16,621.20 and 10,278.90 is: 15,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,080.80 : 16,621.20 = 10,278.90 : x
  2. Step 2: Convert to fraction form
    11,080.80/16,621.20 = 10,278.90/x
  3. Step 3: Cross multiply
    11,080.80x = 16,621.20 × 10,278.90
  4. Step 4: Simplify right side
    11,080.80x = 170,847,652.68
  5. Step 5: Solve for x
    x = 170,847,652.68/11,080.80
  6. Step 6: Final answer
    x = 15,418.35

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Double scale
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Similar ratio
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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.