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Finding the Third Proportional to 15,021 and 21,637

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Solution

The third proportional to 15,021 and 21,637 is: 31,167.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021 : 21,637 = 21,637 : x
  2. Step 2: Convert to fraction form
    15,021/21,637 = 21,637/x
  3. Step 3: Cross multiply
    15,021x = 21,637 × 21,637
  4. Step 4: Simplify right side
    15,021x = 468,159,769
  5. Step 5: Solve for x
    x = 468,159,769/15,021
  6. Step 6: Final answer
    x = 31,167.02

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.