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Finding the Third Proportional to 20,956 and 30,306

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Solution

The third proportional to 20,956 and 30,306 is: 43,827.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956 : 30,306 = 30,306 : x
  2. Step 2: Convert to fraction form
    20,956/30,306 = 30,306/x
  3. Step 3: Cross multiply
    20,956x = 30,306 × 30,306
  4. Step 4: Simplify right side
    20,956x = 918,453,636
  5. Step 5: Solve for x
    x = 918,453,636/20,956
  6. Step 6: Final answer
    x = 43,827.72

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.