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Finding the Third Proportional to 12,212 and 19,902

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Solution

The third proportional to 12,212 and 19,902 is: 32,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212 : 19,902 = 19,902 : x
  2. Step 2: Convert to fraction form
    12,212/19,902 = 19,902/x
  3. Step 3: Cross multiply
    12,212x = 19,902 × 19,902
  4. Step 4: Simplify right side
    12,212x = 396,089,604
  5. Step 5: Solve for x
    x = 396,089,604/12,212
  6. Step 6: Final answer
    x = 32,434.46

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.