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Finding the Third Proportional to 11,130 and 17,115

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Solution

The third proportional to 11,130 and 17,115 is: 26,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130 : 17,115 = 17,115 : x
  2. Step 2: Convert to fraction form
    11,130/17,115 = 17,115/x
  3. Step 3: Cross multiply
    11,130x = 17,115 × 17,115
  4. Step 4: Simplify right side
    11,130x = 292,923,225
  5. Step 5: Solve for x
    x = 292,923,225/11,130
  6. Step 6: Final answer
    x = 26,318.35

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.