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Finding the Third Proportional to 18,690.75 and 25,179.75

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Solution

The third proportional to 18,690.75 and 25,179.75 is: 33,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.75 : 25,179.75 = 25,179.75 : x
  2. Step 2: Convert to fraction form
    18,690.75/25,179.75 = 25,179.75/x
  3. Step 3: Cross multiply
    18,690.75x = 25,179.75 × 25,179.75
  4. Step 4: Simplify right side
    18,690.75x = 634,019,810.06
  5. Step 5: Solve for x
    x = 634,019,810.06/18,690.75
  6. Step 6: Final answer
    x = 33,921.58

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.