Home / 13,587.80-20,379.52-3,724.78

Finding the Fourth Proportional to 13,587.80, 20,379.52 and 3,724.78

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Solution

The fourth proportional to 13,587.80, 20,379.52 and 3,724.78 is: 5,586.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.80 : 20,379.52 = 3,724.78 : x
  2. Step 2: Convert to fraction form
    13,587.80/20,379.52 = 3,724.78/x
  3. Step 3: Cross multiply
    13,587.80x = 20,379.52 × 3,724.78
  4. Step 4: Simplify right side
    13,587.80x = 75,909,107.98
  5. Step 5: Solve for x
    x = 75,909,107.98/13,587.80
  6. Step 6: Final answer
    x = 5,586.56

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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.