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Finding the Third Proportional to 7,172 and 16,658

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Solution

The third proportional to 7,172 and 16,658 is: 38,690.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172 : 16,658 = 16,658 : x
  2. Step 2: Convert to fraction form
    7,172/16,658 = 16,658/x
  3. Step 3: Cross multiply
    7,172x = 16,658 × 16,658
  4. Step 4: Simplify right side
    7,172x = 277,488,964
  5. Step 5: Solve for x
    x = 277,488,964/7,172
  6. Step 6: Final answer
    x = 38,690.60

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.