Home / 18,659.09-25,747.27-11,105.78

Finding the Fourth Proportional to 18,659.09, 25,747.27 and 11,105.78

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Solution

The fourth proportional to 18,659.09, 25,747.27 and 11,105.78 is: 15,324.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.09 : 25,747.27 = 11,105.78 : x
  2. Step 2: Convert to fraction form
    18,659.09/25,747.27 = 11,105.78/x
  3. Step 3: Cross multiply
    18,659.09x = 25,747.27 × 11,105.78
  4. Step 4: Simplify right side
    18,659.09x = 285,943,359.72
  5. Step 5: Solve for x
    x = 285,943,359.72/18,659.09
  6. Step 6: Final answer
    x = 15,324.61

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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.