Home / 18,660.56-25,715.79-11,934.47

Finding the Fourth Proportional to 18,660.56, 25,715.79 and 11,934.47

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Solution

The fourth proportional to 18,660.56, 25,715.79 and 11,934.47 is: 16,446.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.56 : 25,715.79 = 11,934.47 : x
  2. Step 2: Convert to fraction form
    18,660.56/25,715.79 = 11,934.47/x
  3. Step 3: Cross multiply
    18,660.56x = 25,715.79 × 11,934.47
  4. Step 4: Simplify right side
    18,660.56x = 306,904,195.70
  5. Step 5: Solve for x
    x = 306,904,195.70/18,660.56
  6. Step 6: Final answer
    x = 16,446.68

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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.