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Finding the Third Proportional to 18,268 and 28,900

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Solution

The third proportional to 18,268 and 28,900 is: 45,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268 : 28,900 = 28,900 : x
  2. Step 2: Convert to fraction form
    18,268/28,900 = 28,900/x
  3. Step 3: Cross multiply
    18,268x = 28,900 × 28,900
  4. Step 4: Simplify right side
    18,268x = 835,210,000
  5. Step 5: Solve for x
    x = 835,210,000/18,268
  6. Step 6: Final answer
    x = 45,719.84

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.