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Finding the Third Proportional to 12,177 and 15,575

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Solution

The third proportional to 12,177 and 15,575 is: 19,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177 : 15,575 = 15,575 : x
  2. Step 2: Convert to fraction form
    12,177/15,575 = 15,575/x
  3. Step 3: Cross multiply
    12,177x = 15,575 × 15,575
  4. Step 4: Simplify right side
    12,177x = 242,580,625
  5. Step 5: Solve for x
    x = 242,580,625/12,177
  6. Step 6: Final answer
    x = 19,921.21

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.