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Finding the Third Proportional to 10,921 and 16,807

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Solution

The third proportional to 10,921 and 16,807 is: 25,865.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921 : 16,807 = 16,807 : x
  2. Step 2: Convert to fraction form
    10,921/16,807 = 16,807/x
  3. Step 3: Cross multiply
    10,921x = 16,807 × 16,807
  4. Step 4: Simplify right side
    10,921x = 282,475,249
  5. Step 5: Solve for x
    x = 282,475,249/10,921
  6. Step 6: Final answer
    x = 25,865.33

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.