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Finding the Third Proportional to 12,189 and 26,321

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Solution

The third proportional to 12,189 and 26,321 is: 56,837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189 : 26,321 = 26,321 : x
  2. Step 2: Convert to fraction form
    12,189/26,321 = 26,321/x
  3. Step 3: Cross multiply
    12,189x = 26,321 × 26,321
  4. Step 4: Simplify right side
    12,189x = 692,795,041
  5. Step 5: Solve for x
    x = 692,795,041/12,189
  6. Step 6: Final answer
    x = 56,837.73

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.