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Finding the Third Proportional to 13,695 and 20,416.50

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Solution

The third proportional to 13,695 and 20,416.50 is: 30,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695 : 20,416.50 = 20,416.50 : x
  2. Step 2: Convert to fraction form
    13,695/20,416.50 = 20,416.50/x
  3. Step 3: Cross multiply
    13,695x = 20,416.50 × 20,416.50
  4. Step 4: Simplify right side
    13,695x = 416,833,472.25
  5. Step 5: Solve for x
    x = 416,833,472.25/13,695
  6. Step 6: Final answer
    x = 30,436.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.