Home / 25,789.92-38,676.79-9,993.86

Finding the Fourth Proportional to 25,789.92, 38,676.79 and 9,993.86

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Solution

The fourth proportional to 25,789.92, 38,676.79 and 9,993.86 is: 14,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,789.92 : 38,676.79 = 9,993.86 : x
  2. Step 2: Convert to fraction form
    25,789.92/38,676.79 = 9,993.86/x
  3. Step 3: Cross multiply
    25,789.92x = 38,676.79 × 9,993.86
  4. Step 4: Simplify right side
    25,789.92x = 386,530,279.88
  5. Step 5: Solve for x
    x = 386,530,279.88/25,789.92
  6. Step 6: Final answer
    x = 14,987.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.