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Finding the Third Proportional to 7,728 and 18,054

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Solution

The third proportional to 7,728 and 18,054 is: 42,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728 : 18,054 = 18,054 : x
  2. Step 2: Convert to fraction form
    7,728/18,054 = 18,054/x
  3. Step 3: Cross multiply
    7,728x = 18,054 × 18,054
  4. Step 4: Simplify right side
    7,728x = 325,946,916
  5. Step 5: Solve for x
    x = 325,946,916/7,728
  6. Step 6: Final answer
    x = 42,177.40

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.