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Finding the Third Proportional to 15,648 and 20,848

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Solution

The third proportional to 15,648 and 20,848 is: 27,776.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648 : 20,848 = 20,848 : x
  2. Step 2: Convert to fraction form
    15,648/20,848 = 20,848/x
  3. Step 3: Cross multiply
    15,648x = 20,848 × 20,848
  4. Step 4: Simplify right side
    15,648x = 434,639,104
  5. Step 5: Solve for x
    x = 434,639,104/15,648
  6. Step 6: Final answer
    x = 27,776.02

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.