Home / 20,091.32-30,126-8,395.70

Finding the Fourth Proportional to 20,091.32, 30,126 and 8,395.70

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Solution

The fourth proportional to 20,091.32, 30,126 and 8,395.70 is: 12,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.32 : 30,126 = 8,395.70 : x
  2. Step 2: Convert to fraction form
    20,091.32/30,126 = 8,395.70/x
  3. Step 3: Cross multiply
    20,091.32x = 30,126 × 8,395.70
  4. Step 4: Simplify right side
    20,091.32x = 252,928,858.20
  5. Step 5: Solve for x
    x = 252,928,858.20/20,091.32
  6. Step 6: Final answer
    x = 12,588.96

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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.