Home / 20,764.44-31,146.50-5,181.96

Finding the Fourth Proportional to 20,764.44, 31,146.50 and 5,181.96

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Solution

The fourth proportional to 20,764.44, 31,146.50 and 5,181.96 is: 7,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.44 : 31,146.50 = 5,181.96 : x
  2. Step 2: Convert to fraction form
    20,764.44/31,146.50 = 5,181.96/x
  3. Step 3: Cross multiply
    20,764.44x = 31,146.50 × 5,181.96
  4. Step 4: Simplify right side
    20,764.44x = 161,399,917.14
  5. Step 5: Solve for x
    x = 161,399,917.14/20,764.44
  6. Step 6: Final answer
    x = 7,772.90

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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.