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Finding the Third Proportional to 8,889.75 and 12,429

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Solution

The third proportional to 8,889.75 and 12,429 is: 17,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.75 : 12,429 = 12,429 : x
  2. Step 2: Convert to fraction form
    8,889.75/12,429 = 12,429/x
  3. Step 3: Cross multiply
    8,889.75x = 12,429 × 12,429
  4. Step 4: Simplify right side
    8,889.75x = 154,480,041
  5. Step 5: Solve for x
    x = 154,480,041/8,889.75
  6. Step 6: Final answer
    x = 17,377.32

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.