Home / 25,620.30-38,427.20-8,091.90

Finding the Fourth Proportional to 25,620.30, 38,427.20 and 8,091.90

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Solution

The fourth proportional to 25,620.30, 38,427.20 and 8,091.90 is: 12,136.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,620.30 : 38,427.20 = 8,091.90 : x
  2. Step 2: Convert to fraction form
    25,620.30/38,427.20 = 8,091.90/x
  3. Step 3: Cross multiply
    25,620.30x = 38,427.20 × 8,091.90
  4. Step 4: Simplify right side
    25,620.30x = 310,949,059.68
  5. Step 5: Solve for x
    x = 310,949,059.68/25,620.30
  6. Step 6: Final answer
    x = 12,136.82

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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.