Home / 20,648.87-30,951.26-8,163.51

Finding the Fourth Proportional to 20,648.87, 30,951.26 and 8,163.51

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Solution

The fourth proportional to 20,648.87, 30,951.26 and 8,163.51 is: 12,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.87 : 30,951.26 = 8,163.51 : x
  2. Step 2: Convert to fraction form
    20,648.87/30,951.26 = 8,163.51/x
  3. Step 3: Cross multiply
    20,648.87x = 30,951.26 × 8,163.51
  4. Step 4: Simplify right side
    20,648.87x = 252,670,920.52
  5. Step 5: Solve for x
    x = 252,670,920.52/20,648.87
  6. Step 6: Final answer
    x = 12,236.55

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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.