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Finding the Fourth Proportional to 18,576.50, 27,872.03 and 6,897.92

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Solution

The fourth proportional to 18,576.50, 27,872.03 and 6,897.92 is: 10,349.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,576.50 : 27,872.03 = 6,897.92 : x
  2. Step 2: Convert to fraction form
    18,576.50/27,872.03 = 6,897.92/x
  3. Step 3: Cross multiply
    18,576.50x = 27,872.03 × 6,897.92
  4. Step 4: Simplify right side
    18,576.50x = 192,258,911.06
  5. Step 5: Solve for x
    x = 192,258,911.06/18,576.50
  6. Step 6: Final answer
    x = 10,349.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.