Home / 18,323.28-25,286.07-9,939.78

Finding the Fourth Proportional to 18,323.28, 25,286.07 and 9,939.78

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Solution

The fourth proportional to 18,323.28, 25,286.07 and 9,939.78 is: 13,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.28 : 25,286.07 = 9,939.78 : x
  2. Step 2: Convert to fraction form
    18,323.28/25,286.07 = 9,939.78/x
  3. Step 3: Cross multiply
    18,323.28x = 25,286.07 × 9,939.78
  4. Step 4: Simplify right side
    18,323.28x = 251,337,972.86
  5. Step 5: Solve for x
    x = 251,337,972.86/18,323.28
  6. Step 6: Final answer
    x = 13,716.87

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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.