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Finding the Third Proportional to 4,929 and 10,639.50

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Solution

The third proportional to 4,929 and 10,639.50 is: 22,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929 : 10,639.50 = 10,639.50 : x
  2. Step 2: Convert to fraction form
    4,929/10,639.50 = 10,639.50/x
  3. Step 3: Cross multiply
    4,929x = 10,639.50 × 10,639.50
  4. Step 4: Simplify right side
    4,929x = 113,198,960.25
  5. Step 5: Solve for x
    x = 113,198,960.25/4,929
  6. Step 6: Final answer
    x = 22,965.91

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.