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Finding the Third Proportional to 21,928 and 33,440

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Solution

The third proportional to 21,928 and 33,440 is: 50,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928 : 33,440 = 33,440 : x
  2. Step 2: Convert to fraction form
    21,928/33,440 = 33,440/x
  3. Step 3: Cross multiply
    21,928x = 33,440 × 33,440
  4. Step 4: Simplify right side
    21,928x = 1,118,233,600
  5. Step 5: Solve for x
    x = 1,118,233,600/21,928
  6. Step 6: Final answer
    x = 50,995.70

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.