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Finding the Fourth Proportional to 13,625, 20,318.26 and 13,500.44

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Solution

The fourth proportional to 13,625, 20,318.26 and 13,500.44 is: 20,132.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,625 : 20,318.26 = 13,500.44 : x
  2. Step 2: Convert to fraction form
    13,625/20,318.26 = 13,500.44/x
  3. Step 3: Cross multiply
    13,625x = 20,318.26 × 13,500.44
  4. Step 4: Simplify right side
    13,625x = 274,305,450.03
  5. Step 5: Solve for x
    x = 274,305,450.03/13,625
  6. Step 6: Final answer
    x = 20,132.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.