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Finding the Third Proportional to 7,212 and 15,636

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Solution

The third proportional to 7,212 and 15,636 is: 33,899.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212 : 15,636 = 15,636 : x
  2. Step 2: Convert to fraction form
    7,212/15,636 = 15,636/x
  3. Step 3: Cross multiply
    7,212x = 15,636 × 15,636
  4. Step 4: Simplify right side
    7,212x = 244,484,496
  5. Step 5: Solve for x
    x = 244,484,496/7,212
  6. Step 6: Final answer
    x = 33,899.68

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.