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Finding the Fourth Proportional to 12,480.88, 17,229.22 and 8,234.44

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Solution

The fourth proportional to 12,480.88, 17,229.22 and 8,234.44 is: 11,367.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.88 : 17,229.22 = 8,234.44 : x
  2. Step 2: Convert to fraction form
    12,480.88/17,229.22 = 8,234.44/x
  3. Step 3: Cross multiply
    12,480.88x = 17,229.22 × 8,234.44
  4. Step 4: Simplify right side
    12,480.88x = 141,872,978.34
  5. Step 5: Solve for x
    x = 141,872,978.34/12,480.88
  6. Step 6: Final answer
    x = 11,367.23

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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.