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Finding the Third Proportional to 18,687.75 and 28,965.75

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Solution

The third proportional to 18,687.75 and 28,965.75 is: 44,896.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.75 : 28,965.75 = 28,965.75 : x
  2. Step 2: Convert to fraction form
    18,687.75/28,965.75 = 28,965.75/x
  3. Step 3: Cross multiply
    18,687.75x = 28,965.75 × 28,965.75
  4. Step 4: Simplify right side
    18,687.75x = 839,014,673.06
  5. Step 5: Solve for x
    x = 839,014,673.06/18,687.75
  6. Step 6: Final answer
    x = 44,896.51

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.