Home / 20,629.56-30,944.30-7,481.88

Finding the Fourth Proportional to 20,629.56, 30,944.30 and 7,481.88

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Solution

The fourth proportional to 20,629.56, 30,944.30 and 7,481.88 is: 11,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.56 : 30,944.30 = 7,481.88 : x
  2. Step 2: Convert to fraction form
    20,629.56/30,944.30 = 7,481.88/x
  3. Step 3: Cross multiply
    20,629.56x = 30,944.30 × 7,481.88
  4. Step 4: Simplify right side
    20,629.56x = 231,521,539.28
  5. Step 5: Solve for x
    x = 231,521,539.28/20,629.56
  6. Step 6: Final answer
    x = 11,222.81

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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.