Home / 13,702.72-20,550.48-3,839.68

Finding the Fourth Proportional to 13,702.72, 20,550.48 and 3,839.68

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Solution

The fourth proportional to 13,702.72, 20,550.48 and 3,839.68 is: 5,758.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.72 : 20,550.48 = 3,839.68 : x
  2. Step 2: Convert to fraction form
    13,702.72/20,550.48 = 3,839.68/x
  3. Step 3: Cross multiply
    13,702.72x = 20,550.48 × 3,839.68
  4. Step 4: Simplify right side
    13,702.72x = 78,907,267.05
  5. Step 5: Solve for x
    x = 78,907,267.05/13,702.72
  6. Step 6: Final answer
    x = 5,758.51

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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.