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Finding the Third Proportional to 15,684 and 33,768

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Solution

The third proportional to 15,684 and 33,768 is: 72,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,684 : 33,768 = 33,768 : x
  2. Step 2: Convert to fraction form
    15,684/33,768 = 33,768/x
  3. Step 3: Cross multiply
    15,684x = 33,768 × 33,768
  4. Step 4: Simplify right side
    15,684x = 1,140,277,824
  5. Step 5: Solve for x
    x = 1,140,277,824/15,684
  6. Step 6: Final answer
    x = 72,703.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.