Home / 12,080.46-18,131.10-8,385.28

Finding the Fourth Proportional to 12,080.46, 18,131.10 and 8,385.28

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Solution

The fourth proportional to 12,080.46, 18,131.10 and 8,385.28 is: 12,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.46 : 18,131.10 = 8,385.28 : x
  2. Step 2: Convert to fraction form
    12,080.46/18,131.10 = 8,385.28/x
  3. Step 3: Cross multiply
    12,080.46x = 18,131.10 × 8,385.28
  4. Step 4: Simplify right side
    12,080.46x = 152,034,350.21
  5. Step 5: Solve for x
    x = 152,034,350.21/12,080.46
  6. Step 6: Final answer
    x = 12,585.15

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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.