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Finding the Third Proportional to 8,744.25 and 13,639.50

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Solution

The third proportional to 8,744.25 and 13,639.50 is: 21,275.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,744.25 : 13,639.50 = 13,639.50 : x
  2. Step 2: Convert to fraction form
    8,744.25/13,639.50 = 13,639.50/x
  3. Step 3: Cross multiply
    8,744.25x = 13,639.50 × 13,639.50
  4. Step 4: Simplify right side
    8,744.25x = 186,035,960.25
  5. Step 5: Solve for x
    x = 186,035,960.25/8,744.25
  6. Step 6: Final answer
    x = 21,275.23

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.