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Finding the Third Proportional to 7,221 and 14,928

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Solution

The third proportional to 7,221 and 14,928 is: 30,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221 : 14,928 = 14,928 : x
  2. Step 2: Convert to fraction form
    7,221/14,928 = 14,928/x
  3. Step 3: Cross multiply
    7,221x = 14,928 × 14,928
  4. Step 4: Simplify right side
    7,221x = 222,845,184
  5. Step 5: Solve for x
    x = 222,845,184/7,221
  6. Step 6: Final answer
    x = 30,860.71

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.