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Finding the Third Proportional to 10,864 and 15,656

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Solution

The third proportional to 10,864 and 15,656 is: 22,561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864 : 15,656 = 15,656 : x
  2. Step 2: Convert to fraction form
    10,864/15,656 = 15,656/x
  3. Step 3: Cross multiply
    10,864x = 15,656 × 15,656
  4. Step 4: Simplify right side
    10,864x = 245,110,336
  5. Step 5: Solve for x
    x = 245,110,336/10,864
  6. Step 6: Final answer
    x = 22,561.70

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.