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Finding the Third Proportional to 10,478 and 16,438

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Solution

The third proportional to 10,478 and 16,438 is: 25,788.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478 : 16,438 = 16,438 : x
  2. Step 2: Convert to fraction form
    10,478/16,438 = 16,438/x
  3. Step 3: Cross multiply
    10,478x = 16,438 × 16,438
  4. Step 4: Simplify right side
    10,478x = 270,207,844
  5. Step 5: Solve for x
    x = 270,207,844/10,478
  6. Step 6: Final answer
    x = 25,788.11

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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.