Home / 20,908.24-28,853.25-11,348.31

Finding the Fourth Proportional to 20,908.24, 28,853.25 and 11,348.31

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Solution

The fourth proportional to 20,908.24, 28,853.25 and 11,348.31 is: 15,660.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.24 : 28,853.25 = 11,348.31 : x
  2. Step 2: Convert to fraction form
    20,908.24/28,853.25 = 11,348.31/x
  3. Step 3: Cross multiply
    20,908.24x = 28,853.25 × 11,348.31
  4. Step 4: Simplify right side
    20,908.24x = 327,435,691.15
  5. Step 5: Solve for x
    x = 327,435,691.15/20,908.24
  6. Step 6: Final answer
    x = 15,660.61

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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.