Home / 13,385.86-18,469.82-8,080.97

Finding the Fourth Proportional to 13,385.86, 18,469.82 and 8,080.97

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Solution

The fourth proportional to 13,385.86, 18,469.82 and 8,080.97 is: 11,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.86 : 18,469.82 = 8,080.97 : x
  2. Step 2: Convert to fraction form
    13,385.86/18,469.82 = 8,080.97/x
  3. Step 3: Cross multiply
    13,385.86x = 18,469.82 × 8,080.97
  4. Step 4: Simplify right side
    13,385.86x = 149,253,989.18
  5. Step 5: Solve for x
    x = 149,253,989.18/13,385.86
  6. Step 6: Final answer
    x = 11,150.13

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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.