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Finding the Third Proportional to 15,616 and 33,620

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Solution

The third proportional to 15,616 and 33,620 is: 72,381.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616 : 33,620 = 33,620 : x
  2. Step 2: Convert to fraction form
    15,616/33,620 = 33,620/x
  3. Step 3: Cross multiply
    15,616x = 33,620 × 33,620
  4. Step 4: Simplify right side
    15,616x = 1,130,304,400
  5. Step 5: Solve for x
    x = 1,130,304,400/15,616
  6. Step 6: Final answer
    x = 72,381.17

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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.