Home / 18,224.66-25,142.72-11,138.78

Finding the Fourth Proportional to 18,224.66, 25,142.72 and 11,138.78

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Solution

The fourth proportional to 18,224.66, 25,142.72 and 11,138.78 is: 15,367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,224.66 : 25,142.72 = 11,138.78 : x
  2. Step 2: Convert to fraction form
    18,224.66/25,142.72 = 11,138.78/x
  3. Step 3: Cross multiply
    18,224.66x = 25,142.72 × 11,138.78
  4. Step 4: Simplify right side
    18,224.66x = 280,059,226.68
  5. Step 5: Solve for x
    x = 280,059,226.68/18,224.66
  6. Step 6: Final answer
    x = 15,367.05

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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.