Home / 18,198.12-25,105.85-13,151.16

Finding the Fourth Proportional to 18,198.12, 25,105.85 and 13,151.16

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Solution

The fourth proportional to 18,198.12, 25,105.85 and 13,151.16 is: 18,143.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.12 : 25,105.85 = 13,151.16 : x
  2. Step 2: Convert to fraction form
    18,198.12/25,105.85 = 13,151.16/x
  3. Step 3: Cross multiply
    18,198.12x = 25,105.85 × 13,151.16
  4. Step 4: Simplify right side
    18,198.12x = 330,171,033.85
  5. Step 5: Solve for x
    x = 330,171,033.85/18,198.12
  6. Step 6: Final answer
    x = 18,143.14

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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.