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Finding the Third Proportional to 10,220 and 13,296

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Solution

The third proportional to 10,220 and 13,296 is: 17,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220 : 13,296 = 13,296 : x
  2. Step 2: Convert to fraction form
    10,220/13,296 = 13,296/x
  3. Step 3: Cross multiply
    10,220x = 13,296 × 13,296
  4. Step 4: Simplify right side
    10,220x = 176,783,616
  5. Step 5: Solve for x
    x = 176,783,616/10,220
  6. Step 6: Final answer
    x = 17,297.81

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.