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Finding the Third Proportional to 13,815 and 18,535.50

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Solution

The third proportional to 13,815 and 18,535.50 is: 24,868.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815 : 18,535.50 = 18,535.50 : x
  2. Step 2: Convert to fraction form
    13,815/18,535.50 = 18,535.50/x
  3. Step 3: Cross multiply
    13,815x = 18,535.50 × 18,535.50
  4. Step 4: Simplify right side
    13,815x = 343,564,760.25
  5. Step 5: Solve for x
    x = 343,564,760.25/13,815
  6. Step 6: Final answer
    x = 24,868.97

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.