Home / 20,738.28-31,120.74-9,052.68

Finding the Fourth Proportional to 20,738.28, 31,120.74 and 9,052.68

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Solution

The fourth proportional to 20,738.28, 31,120.74 and 9,052.68 is: 13,584.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.28 : 31,120.74 = 9,052.68 : x
  2. Step 2: Convert to fraction form
    20,738.28/31,120.74 = 9,052.68/x
  3. Step 3: Cross multiply
    20,738.28x = 31,120.74 × 9,052.68
  4. Step 4: Simplify right side
    20,738.28x = 281,726,100.58
  5. Step 5: Solve for x
    x = 281,726,100.58/20,738.28
  6. Step 6: Final answer
    x = 13,584.83

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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.