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Finding the Third Proportional to 8,987.50 and 19,109

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Solution

The third proportional to 8,987.50 and 19,109 is: 40,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.50 : 19,109 = 19,109 : x
  2. Step 2: Convert to fraction form
    8,987.50/19,109 = 19,109/x
  3. Step 3: Cross multiply
    8,987.50x = 19,109 × 19,109
  4. Step 4: Simplify right side
    8,987.50x = 365,153,881
  5. Step 5: Solve for x
    x = 365,153,881/8,987.50
  6. Step 6: Final answer
    x = 40,629.08

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.