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Finding the Third Proportional to 18,099 and 28,421

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Solution

The third proportional to 18,099 and 28,421 is: 44,629.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,099 : 28,421 = 28,421 : x
  2. Step 2: Convert to fraction form
    18,099/28,421 = 28,421/x
  3. Step 3: Cross multiply
    18,099x = 28,421 × 28,421
  4. Step 4: Simplify right side
    18,099x = 807,753,241
  5. Step 5: Solve for x
    x = 807,753,241/18,099
  6. Step 6: Final answer
    x = 44,629.72

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.