Home / 25,638.30-38,454.21-8,109.90

Finding the Fourth Proportional to 25,638.30, 38,454.21 and 8,109.90

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Solution

The fourth proportional to 25,638.30, 38,454.21 and 8,109.90 is: 12,163.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,638.30 : 38,454.21 = 8,109.90 : x
  2. Step 2: Convert to fraction form
    25,638.30/38,454.21 = 8,109.90/x
  3. Step 3: Cross multiply
    25,638.30x = 38,454.21 × 8,109.90
  4. Step 4: Simplify right side
    25,638.30x = 311,859,797.68
  5. Step 5: Solve for x
    x = 311,859,797.68/25,638.30
  6. Step 6: Final answer
    x = 12,163.83

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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.