Home / 18,217.80-25,129.07-12,542.70

Finding the Fourth Proportional to 18,217.80, 25,129.07 and 12,542.70

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Solution

The fourth proportional to 18,217.80, 25,129.07 and 12,542.70 is: 17,301.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.80 : 25,129.07 = 12,542.70 : x
  2. Step 2: Convert to fraction form
    18,217.80/25,129.07 = 12,542.70/x
  3. Step 3: Cross multiply
    18,217.80x = 25,129.07 × 12,542.70
  4. Step 4: Simplify right side
    18,217.80x = 315,186,197.93
  5. Step 5: Solve for x
    x = 315,186,197.93/18,217.80
  6. Step 6: Final answer
    x = 17,301.00

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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.