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Finding the Third Proportional to 18,207 and 28,116

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Solution

The third proportional to 18,207 and 28,116 is: 43,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207 : 28,116 = 28,116 : x
  2. Step 2: Convert to fraction form
    18,207/28,116 = 28,116/x
  3. Step 3: Cross multiply
    18,207x = 28,116 × 28,116
  4. Step 4: Simplify right side
    18,207x = 790,509,456
  5. Step 5: Solve for x
    x = 790,509,456/18,207
  6. Step 6: Final answer
    x = 43,417.89

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.