Home / 12,116.60-18,174.84-3,231.91

Finding the Fourth Proportional to 12,116.60, 18,174.84 and 3,231.91

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Solution

The fourth proportional to 12,116.60, 18,174.84 and 3,231.91 is: 4,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.60 : 18,174.84 = 3,231.91 : x
  2. Step 2: Convert to fraction form
    12,116.60/18,174.84 = 3,231.91/x
  3. Step 3: Cross multiply
    12,116.60x = 18,174.84 × 3,231.91
  4. Step 4: Simplify right side
    12,116.60x = 58,739,447.14
  5. Step 5: Solve for x
    x = 58,739,447.14/12,116.60
  6. Step 6: Final answer
    x = 4,847.85

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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.