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Finding the Fourth Proportional to 8,755.88, 13,149.48 and 8,403.53

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Solution

The fourth proportional to 8,755.88, 13,149.48 and 8,403.53 is: 12,620.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.88 : 13,149.48 = 8,403.53 : x
  2. Step 2: Convert to fraction form
    8,755.88/13,149.48 = 8,403.53/x
  3. Step 3: Cross multiply
    8,755.88x = 13,149.48 × 8,403.53
  4. Step 4: Simplify right side
    8,755.88x = 110,502,049.66
  5. Step 5: Solve for x
    x = 110,502,049.66/8,755.88
  6. Step 6: Final answer
    x = 12,620.32

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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.