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Finding the Third Proportional to 9,953 and 20,930

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Solution

The third proportional to 9,953 and 20,930 is: 44,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,953 : 20,930 = 20,930 : x
  2. Step 2: Convert to fraction form
    9,953/20,930 = 20,930/x
  3. Step 3: Cross multiply
    9,953x = 20,930 × 20,930
  4. Step 4: Simplify right side
    9,953x = 438,064,900
  5. Step 5: Solve for x
    x = 438,064,900/9,953
  6. Step 6: Final answer
    x = 44,013.35

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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.