Home / 13,309.82-19,961.32-3,947.65

Finding the Fourth Proportional to 13,309.82, 19,961.32 and 3,947.65

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Solution

The fourth proportional to 13,309.82, 19,961.32 and 3,947.65 is: 5,920.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.82 : 19,961.32 = 3,947.65 : x
  2. Step 2: Convert to fraction form
    13,309.82/19,961.32 = 3,947.65/x
  3. Step 3: Cross multiply
    13,309.82x = 19,961.32 × 3,947.65
  4. Step 4: Simplify right side
    13,309.82x = 78,800,304.90
  5. Step 5: Solve for x
    x = 78,800,304.90/13,309.82
  6. Step 6: Final answer
    x = 5,920.46

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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.