Home / 20,331.23-30,475.97-7,847.87

Finding the Fourth Proportional to 20,331.23, 30,475.97 and 7,847.87

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Solution

The fourth proportional to 20,331.23, 30,475.97 and 7,847.87 is: 11,763.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.23 : 30,475.97 = 7,847.87 : x
  2. Step 2: Convert to fraction form
    20,331.23/30,475.97 = 7,847.87/x
  3. Step 3: Cross multiply
    20,331.23x = 30,475.97 × 7,847.87
  4. Step 4: Simplify right side
    20,331.23x = 239,171,411.44
  5. Step 5: Solve for x
    x = 239,171,411.44/20,331.23
  6. Step 6: Final answer
    x = 11,763.75

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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.