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Finding the Third Proportional to 10,221 and 14,643

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Solution

The third proportional to 10,221 and 14,643 is: 20,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221 : 14,643 = 14,643 : x
  2. Step 2: Convert to fraction form
    10,221/14,643 = 14,643/x
  3. Step 3: Cross multiply
    10,221x = 14,643 × 14,643
  4. Step 4: Simplify right side
    10,221x = 214,417,449
  5. Step 5: Solve for x
    x = 214,417,449/10,221
  6. Step 6: Final answer
    x = 20,978.13

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.