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Finding the Third Proportional to 18,360 and 39,447

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Solution

The third proportional to 18,360 and 39,447 is: 84,753.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360 : 39,447 = 39,447 : x
  2. Step 2: Convert to fraction form
    18,360/39,447 = 39,447/x
  3. Step 3: Cross multiply
    18,360x = 39,447 × 39,447
  4. Step 4: Simplify right side
    18,360x = 1,556,065,809
  5. Step 5: Solve for x
    x = 1,556,065,809/18,360
  6. Step 6: Final answer
    x = 84,753.04

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.