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Finding the Third Proportional to 21,888 and 29,760

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Solution

The third proportional to 21,888 and 29,760 is: 40,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888 : 29,760 = 29,760 : x
  2. Step 2: Convert to fraction form
    21,888/29,760 = 29,760/x
  3. Step 3: Cross multiply
    21,888x = 29,760 × 29,760
  4. Step 4: Simplify right side
    21,888x = 885,657,600
  5. Step 5: Solve for x
    x = 885,657,600/21,888
  6. Step 6: Final answer
    x = 40,463.16

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.