Home / 25,680.87-38,520.90-8,150.49

Finding the Fourth Proportional to 25,680.87, 38,520.90 and 8,150.49

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Solution

The fourth proportional to 25,680.87, 38,520.90 and 8,150.49 is: 12,225.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,680.87 : 38,520.90 = 8,150.49 : x
  2. Step 2: Convert to fraction form
    25,680.87/38,520.90 = 8,150.49/x
  3. Step 3: Cross multiply
    25,680.87x = 38,520.90 × 8,150.49
  4. Step 4: Simplify right side
    25,680.87x = 313,964,210.24
  5. Step 5: Solve for x
    x = 313,964,210.24/25,680.87
  6. Step 6: Final answer
    x = 12,225.61

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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.