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Finding the Third Proportional to 15,621 and 33,738

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Solution

The third proportional to 15,621 and 33,738 is: 72,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621 : 33,738 = 33,738 : x
  2. Step 2: Convert to fraction form
    15,621/33,738 = 33,738/x
  3. Step 3: Cross multiply
    15,621x = 33,738 × 33,738
  4. Step 4: Simplify right side
    15,621x = 1,138,252,644
  5. Step 5: Solve for x
    x = 1,138,252,644/15,621
  6. Step 6: Final answer
    x = 72,866.82

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.