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Finding the Third Proportional to 18,556 and 30,810

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Solution

The third proportional to 18,556 and 30,810 is: 51,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556 : 30,810 = 30,810 : x
  2. Step 2: Convert to fraction form
    18,556/30,810 = 30,810/x
  3. Step 3: Cross multiply
    18,556x = 30,810 × 30,810
  4. Step 4: Simplify right side
    18,556x = 949,256,100
  5. Step 5: Solve for x
    x = 949,256,100/18,556
  6. Step 6: Final answer
    x = 51,156.29

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.