Home / 71,467.20-107,205.96-18,876

Finding the Fourth Proportional to 71,467.20, 107,205.96 and 18,876

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Solution

The fourth proportional to 71,467.20, 107,205.96 and 18,876 is: 28,315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,467.20 : 107,205.96 = 18,876 : x
  2. Step 2: Convert to fraction form
    71,467.20/107,205.96 = 18,876/x
  3. Step 3: Cross multiply
    71,467.20x = 107,205.96 × 18,876
  4. Step 4: Simplify right side
    71,467.20x = 2,023,619,700.96
  5. Step 5: Solve for x
    x = 2,023,619,700.96/71,467.20
  6. Step 6: Final answer
    x = 28,315.36

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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.