Home / 18,387.12-25,366.12-11,310.96

Finding the Fourth Proportional to 18,387.12, 25,366.12 and 11,310.96

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Solution

The fourth proportional to 18,387.12, 25,366.12 and 11,310.96 is: 15,604.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.12 : 25,366.12 = 11,310.96 : x
  2. Step 2: Convert to fraction form
    18,387.12/25,366.12 = 11,310.96/x
  3. Step 3: Cross multiply
    18,387.12x = 25,366.12 × 11,310.96
  4. Step 4: Simplify right side
    18,387.12x = 286,915,168.68
  5. Step 5: Solve for x
    x = 286,915,168.68/18,387.12
  6. Step 6: Final answer
    x = 15,604.14

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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.