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Finding the Third Proportional to 11,690 and 18,590

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Solution

The third proportional to 11,690 and 18,590 is: 29,562.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690 : 18,590 = 18,590 : x
  2. Step 2: Convert to fraction form
    11,690/18,590 = 18,590/x
  3. Step 3: Cross multiply
    11,690x = 18,590 × 18,590
  4. Step 4: Simplify right side
    11,690x = 345,588,100
  5. Step 5: Solve for x
    x = 345,588,100/11,690
  6. Step 6: Final answer
    x = 29,562.71

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.