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Finding the Fourth Proportional to 13,736, 20,602.96 and 4,375.64

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Solution

The fourth proportional to 13,736, 20,602.96 and 4,375.64 is: 6,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736 : 20,602.96 = 4,375.64 : x
  2. Step 2: Convert to fraction form
    13,736/20,602.96 = 4,375.64/x
  3. Step 3: Cross multiply
    13,736x = 20,602.96 × 4,375.64
  4. Step 4: Simplify right side
    13,736x = 90,151,135.89
  5. Step 5: Solve for x
    x = 90,151,135.89/13,736
  6. Step 6: Final answer
    x = 6,563.13

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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.