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Finding the Third Proportional to 13,488 and 20,704

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Solution

The third proportional to 13,488 and 20,704 is: 31,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488 : 20,704 = 20,704 : x
  2. Step 2: Convert to fraction form
    13,488/20,704 = 20,704/x
  3. Step 3: Cross multiply
    13,488x = 20,704 × 20,704
  4. Step 4: Simplify right side
    13,488x = 428,655,616
  5. Step 5: Solve for x
    x = 428,655,616/13,488
  6. Step 6: Final answer
    x = 31,780.52

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.