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Finding the Third Proportional to 21,939.75 and 34,929

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Solution

The third proportional to 21,939.75 and 34,929 is: 55,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.75 : 34,929 = 34,929 : x
  2. Step 2: Convert to fraction form
    21,939.75/34,929 = 34,929/x
  3. Step 3: Cross multiply
    21,939.75x = 34,929 × 34,929
  4. Step 4: Simplify right side
    21,939.75x = 1,220,035,041
  5. Step 5: Solve for x
    x = 1,220,035,041/21,939.75
  6. Step 6: Final answer
    x = 55,608.43

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.