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Finding the Third Proportional to 18,838 and 28,500

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Solution

The third proportional to 18,838 and 28,500 is: 43,117.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838 : 28,500 = 28,500 : x
  2. Step 2: Convert to fraction form
    18,838/28,500 = 28,500/x
  3. Step 3: Cross multiply
    18,838x = 28,500 × 28,500
  4. Step 4: Simplify right side
    18,838x = 812,250,000
  5. Step 5: Solve for x
    x = 812,250,000/18,838
  6. Step 6: Final answer
    x = 43,117.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.