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Finding the Third Proportional to 12,429 and 19,230.75

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Solution

The third proportional to 12,429 and 19,230.75 is: 29,754.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429 : 19,230.75 = 19,230.75 : x
  2. Step 2: Convert to fraction form
    12,429/19,230.75 = 19,230.75/x
  3. Step 3: Cross multiply
    12,429x = 19,230.75 × 19,230.75
  4. Step 4: Simplify right side
    12,429x = 369,821,745.56
  5. Step 5: Solve for x
    x = 369,821,745.56/12,429
  6. Step 6: Final answer
    x = 29,754.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.