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Finding the Third Proportional to 10,386 and 19,956

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Solution

The third proportional to 10,386 and 19,956 is: 38,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386 : 19,956 = 19,956 : x
  2. Step 2: Convert to fraction form
    10,386/19,956 = 19,956/x
  3. Step 3: Cross multiply
    10,386x = 19,956 × 19,956
  4. Step 4: Simplify right side
    10,386x = 398,241,936
  5. Step 5: Solve for x
    x = 398,241,936/10,386
  6. Step 6: Final answer
    x = 38,344.11

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Why These Related Problems?

These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.