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Finding the Fourth Proportional to 13,704.71, 20,436.73 and 13,579.97

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Solution

The fourth proportional to 13,704.71, 20,436.73 and 13,579.97 is: 20,250.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.71 : 20,436.73 = 13,579.97 : x
  2. Step 2: Convert to fraction form
    13,704.71/20,436.73 = 13,579.97/x
  3. Step 3: Cross multiply
    13,704.71x = 20,436.73 × 13,579.97
  4. Step 4: Simplify right side
    13,704.71x = 277,530,044.16
  5. Step 5: Solve for x
    x = 277,530,044.16/13,704.71
  6. Step 6: Final answer
    x = 20,250.71

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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.