Home / 18,502.28-25,540.74-12,542.12

Finding the Fourth Proportional to 18,502.28, 25,540.74 and 12,542.12

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Solution

The fourth proportional to 18,502.28, 25,540.74 and 12,542.12 is: 17,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.28 : 25,540.74 = 12,542.12 : x
  2. Step 2: Convert to fraction form
    18,502.28/25,540.74 = 12,542.12/x
  3. Step 3: Cross multiply
    18,502.28x = 25,540.74 × 12,542.12
  4. Step 4: Simplify right side
    18,502.28x = 320,335,025.97
  5. Step 5: Solve for x
    x = 320,335,025.97/18,502.28
  6. Step 6: Final answer
    x = 17,313.27

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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.