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Finding the Fourth Proportional to 11,272.78, 16,909.17 and 8,803.90

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Solution

The fourth proportional to 11,272.78, 16,909.17 and 8,803.90 is: 13,205.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,272.78 : 16,909.17 = 8,803.90 : x
  2. Step 2: Convert to fraction form
    11,272.78/16,909.17 = 8,803.90/x
  3. Step 3: Cross multiply
    11,272.78x = 16,909.17 × 8,803.90
  4. Step 4: Simplify right side
    11,272.78x = 148,866,641.76
  5. Step 5: Solve for x
    x = 148,866,641.76/11,272.78
  6. Step 6: Final answer
    x = 13,205.85

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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.