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Finding the Third Proportional to 7,212 and 15,503

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Solution

The third proportional to 7,212 and 15,503 is: 33,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212 : 15,503 = 15,503 : x
  2. Step 2: Convert to fraction form
    7,212/15,503 = 15,503/x
  3. Step 3: Cross multiply
    7,212x = 15,503 × 15,503
  4. Step 4: Simplify right side
    7,212x = 240,343,009
  5. Step 5: Solve for x
    x = 240,343,009/7,212
  6. Step 6: Final answer
    x = 33,325.43

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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.