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Finding the Third Proportional to 15,330 and 16,770

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Solution

The third proportional to 15,330 and 16,770 is: 18,345.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330 : 16,770 = 16,770 : x
  2. Step 2: Convert to fraction form
    15,330/16,770 = 16,770/x
  3. Step 3: Cross multiply
    15,330x = 16,770 × 16,770
  4. Step 4: Simplify right side
    15,330x = 281,232,900
  5. Step 5: Solve for x
    x = 281,232,900/15,330
  6. Step 6: Final answer
    x = 18,345.26

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.