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Finding the Third Proportional to 10,856 and 16,918

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Solution

The third proportional to 10,856 and 16,918 is: 26,365.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856 : 16,918 = 16,918 : x
  2. Step 2: Convert to fraction form
    10,856/16,918 = 16,918/x
  3. Step 3: Cross multiply
    10,856x = 16,918 × 16,918
  4. Step 4: Simplify right side
    10,856x = 286,218,724
  5. Step 5: Solve for x
    x = 286,218,724/10,856
  6. Step 6: Final answer
    x = 26,365.03

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.