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Finding the Third Proportional to 10,008 and 20,972

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Solution

The third proportional to 10,008 and 20,972 is: 43,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,008 : 20,972 = 20,972 : x
  2. Step 2: Convert to fraction form
    10,008/20,972 = 20,972/x
  3. Step 3: Cross multiply
    10,008x = 20,972 × 20,972
  4. Step 4: Simplify right side
    10,008x = 439,824,784
  5. Step 5: Solve for x
    x = 439,824,784/10,008
  6. Step 6: Final answer
    x = 43,947.32

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.