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Finding the Third Proportional to 11,979 and 17,153

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Solution

The third proportional to 11,979 and 17,153 is: 24,561.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979 : 17,153 = 17,153 : x
  2. Step 2: Convert to fraction form
    11,979/17,153 = 17,153/x
  3. Step 3: Cross multiply
    11,979x = 17,153 × 17,153
  4. Step 4: Simplify right side
    11,979x = 294,225,409
  5. Step 5: Solve for x
    x = 294,225,409/11,979
  6. Step 6: Final answer
    x = 24,561.77

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.