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Finding the Third Proportional to 12,306 and 19,279

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Solution

The third proportional to 12,306 and 19,279 is: 30,203.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306 : 19,279 = 19,279 : x
  2. Step 2: Convert to fraction form
    12,306/19,279 = 19,279/x
  3. Step 3: Cross multiply
    12,306x = 19,279 × 19,279
  4. Step 4: Simplify right side
    12,306x = 371,679,841
  5. Step 5: Solve for x
    x = 371,679,841/12,306
  6. Step 6: Final answer
    x = 30,203.14

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.