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Finding the Fourth Proportional to 13,843.14, 20,751.91 and 5,521.13

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Solution

The fourth proportional to 13,843.14, 20,751.91 and 5,521.13 is: 8,276.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.14 : 20,751.91 = 5,521.13 : x
  2. Step 2: Convert to fraction form
    13,843.14/20,751.91 = 5,521.13/x
  3. Step 3: Cross multiply
    13,843.14x = 20,751.91 × 5,521.13
  4. Step 4: Simplify right side
    13,843.14x = 114,573,861.49
  5. Step 5: Solve for x
    x = 114,573,861.49/13,843.14
  6. Step 6: Final answer
    x = 8,276.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.