Home / 13,385.29-18,471.69-8,080.12

Finding the Fourth Proportional to 13,385.29, 18,471.69 and 8,080.12

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Solution

The fourth proportional to 13,385.29, 18,471.69 and 8,080.12 is: 11,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.29 : 18,471.69 = 8,080.12 : x
  2. Step 2: Convert to fraction form
    13,385.29/18,471.69 = 8,080.12/x
  3. Step 3: Cross multiply
    13,385.29x = 18,471.69 × 8,080.12
  4. Step 4: Simplify right side
    13,385.29x = 149,253,471.80
  5. Step 5: Solve for x
    x = 149,253,471.80/13,385.29
  6. Step 6: Final answer
    x = 11,150.56

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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.