Home / 13,947.30-20,917.31-5,177.43

Finding the Fourth Proportional to 13,947.30, 20,917.31 and 5,177.43

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Solution

The fourth proportional to 13,947.30, 20,917.31 and 5,177.43 is: 7,764.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.30 : 20,917.31 = 5,177.43 : x
  2. Step 2: Convert to fraction form
    13,947.30/20,917.31 = 5,177.43/x
  3. Step 3: Cross multiply
    13,947.30x = 20,917.31 × 5,177.43
  4. Step 4: Simplify right side
    13,947.30x = 108,297,882.43
  5. Step 5: Solve for x
    x = 108,297,882.43/13,947.30
  6. Step 6: Final answer
    x = 7,764.79

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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.