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Finding the Third Proportional to 10,816 and 15,112

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Solution

The third proportional to 10,816 and 15,112 is: 21,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,816 : 15,112 = 15,112 : x
  2. Step 2: Convert to fraction form
    10,816/15,112 = 15,112/x
  3. Step 3: Cross multiply
    10,816x = 15,112 × 15,112
  4. Step 4: Simplify right side
    10,816x = 228,372,544
  5. Step 5: Solve for x
    x = 228,372,544/10,816
  6. Step 6: Final answer
    x = 21,114.33

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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.