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Finding the Third Proportional to 12,505 and 19,129

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Solution

The third proportional to 12,505 and 19,129 is: 29,261.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505 : 19,129 = 19,129 : x
  2. Step 2: Convert to fraction form
    12,505/19,129 = 19,129/x
  3. Step 3: Cross multiply
    12,505x = 19,129 × 19,129
  4. Step 4: Simplify right side
    12,505x = 365,918,641
  5. Step 5: Solve for x
    x = 365,918,641/12,505
  6. Step 6: Final answer
    x = 29,261.79

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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.