Home / 13,591.20-18,755.76-8,002.08

Finding the Fourth Proportional to 13,591.20, 18,755.76 and 8,002.08

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Solution

The fourth proportional to 13,591.20, 18,755.76 and 8,002.08 is: 11,042.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.20 : 18,755.76 = 8,002.08 : x
  2. Step 2: Convert to fraction form
    13,591.20/18,755.76 = 8,002.08/x
  3. Step 3: Cross multiply
    13,591.20x = 18,755.76 × 8,002.08
  4. Step 4: Simplify right side
    13,591.20x = 150,085,091.98
  5. Step 5: Solve for x
    x = 150,085,091.98/13,591.20
  6. Step 6: Final answer
    x = 11,042.81

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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.