Home / 11,281.10-15,549.28-8,481.74

Finding the Fourth Proportional to 11,281.10, 15,549.28 and 8,481.74

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Solution

The fourth proportional to 11,281.10, 15,549.28 and 8,481.74 is: 11,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,281.10 : 15,549.28 = 8,481.74 : x
  2. Step 2: Convert to fraction form
    11,281.10/15,549.28 = 8,481.74/x
  3. Step 3: Cross multiply
    11,281.10x = 15,549.28 × 8,481.74
  4. Step 4: Simplify right side
    11,281.10x = 131,884,851.20
  5. Step 5: Solve for x
    x = 131,884,851.20/11,281.10
  6. Step 6: Final answer
    x = 11,690.78

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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.