Home / 13,180.96-19,772-3,947.04

Finding the Fourth Proportional to 13,180.96, 19,772 and 3,947.04

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Solution

The fourth proportional to 13,180.96, 19,772 and 3,947.04 is: 5,920.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.96 : 19,772 = 3,947.04 : x
  2. Step 2: Convert to fraction form
    13,180.96/19,772 = 3,947.04/x
  3. Step 3: Cross multiply
    13,180.96x = 19,772 × 3,947.04
  4. Step 4: Simplify right side
    13,180.96x = 78,040,874.88
  5. Step 5: Solve for x
    x = 78,040,874.88/13,180.96
  6. Step 6: Final answer
    x = 5,920.73

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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.