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Finding the Third Proportional to 17,212 and 18,796

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Solution

The third proportional to 17,212 and 18,796 is: 20,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,212 : 18,796 = 18,796 : x
  2. Step 2: Convert to fraction form
    17,212/18,796 = 18,796/x
  3. Step 3: Cross multiply
    17,212x = 18,796 × 18,796
  4. Step 4: Simplify right side
    17,212x = 353,289,616
  5. Step 5: Solve for x
    x = 353,289,616/17,212
  6. Step 6: Final answer
    x = 20,525.77

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.