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Finding the Third Proportional to 9,159 and 13,780.50

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Solution

The third proportional to 9,159 and 13,780.50 is: 20,733.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159 : 13,780.50 = 13,780.50 : x
  2. Step 2: Convert to fraction form
    9,159/13,780.50 = 13,780.50/x
  3. Step 3: Cross multiply
    9,159x = 13,780.50 × 13,780.50
  4. Step 4: Simplify right side
    9,159x = 189,902,180.25
  5. Step 5: Solve for x
    x = 189,902,180.25/9,159
  6. Step 6: Final answer
    x = 20,733.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.