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Finding the Third Proportional to 13,486 and 20,938.50

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Solution

The third proportional to 13,486 and 20,938.50 is: 32,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486 : 20,938.50 = 20,938.50 : x
  2. Step 2: Convert to fraction form
    13,486/20,938.50 = 20,938.50/x
  3. Step 3: Cross multiply
    13,486x = 20,938.50 × 20,938.50
  4. Step 4: Simplify right side
    13,486x = 438,420,782.25
  5. Step 5: Solve for x
    x = 438,420,782.25/13,486
  6. Step 6: Final answer
    x = 32,509.33

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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.