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Finding the Third Proportional to 18,521 and 39,937

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Solution

The third proportional to 18,521 and 39,937 is: 86,116.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521 : 39,937 = 39,937 : x
  2. Step 2: Convert to fraction form
    18,521/39,937 = 39,937/x
  3. Step 3: Cross multiply
    18,521x = 39,937 × 39,937
  4. Step 4: Simplify right side
    18,521x = 1,594,963,969
  5. Step 5: Solve for x
    x = 1,594,963,969/18,521
  6. Step 6: Final answer
    x = 86,116.51

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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.