Home / 25,378.20-38,067.30-18,379.80

Finding the Fourth Proportional to 25,378.20, 38,067.30 and 18,379.80

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Solution

The fourth proportional to 25,378.20, 38,067.30 and 18,379.80 is: 27,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,378.20 : 38,067.30 = 18,379.80 : x
  2. Step 2: Convert to fraction form
    25,378.20/38,067.30 = 18,379.80/x
  3. Step 3: Cross multiply
    25,378.20x = 38,067.30 × 18,379.80
  4. Step 4: Simplify right side
    25,378.20x = 699,669,360.54
  5. Step 5: Solve for x
    x = 699,669,360.54/25,378.20
  6. Step 6: Final answer
    x = 27,569.70

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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.