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Finding the Third Proportional to 18,854 and 39,648

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Solution

The third proportional to 18,854 and 39,648 is: 83,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854 : 39,648 = 39,648 : x
  2. Step 2: Convert to fraction form
    18,854/39,648 = 39,648/x
  3. Step 3: Cross multiply
    18,854x = 39,648 × 39,648
  4. Step 4: Simplify right side
    18,854x = 1,571,963,904
  5. Step 5: Solve for x
    x = 1,571,963,904/18,854
  6. Step 6: Final answer
    x = 83,375.62

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.