Home / 20,847.18-31,276.62-8,375.96

Finding the Fourth Proportional to 20,847.18, 31,276.62 and 8,375.96

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Solution

The fourth proportional to 20,847.18, 31,276.62 and 8,375.96 is: 12,566.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.18 : 31,276.62 = 8,375.96 : x
  2. Step 2: Convert to fraction form
    20,847.18/31,276.62 = 8,375.96/x
  3. Step 3: Cross multiply
    20,847.18x = 31,276.62 × 8,375.96
  4. Step 4: Simplify right side
    20,847.18x = 261,971,796.25
  5. Step 5: Solve for x
    x = 261,971,796.25/20,847.18
  6. Step 6: Final answer
    x = 12,566.29

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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.