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Finding the Fourth Proportional to 18,949.29, 28,424.01 and 8,548.89

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Solution

The fourth proportional to 18,949.29, 28,424.01 and 8,548.89 is: 12,823.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.29 : 28,424.01 = 8,548.89 : x
  2. Step 2: Convert to fraction form
    18,949.29/28,424.01 = 8,548.89/x
  3. Step 3: Cross multiply
    18,949.29x = 28,424.01 × 8,548.89
  4. Step 4: Simplify right side
    18,949.29x = 242,993,734.85
  5. Step 5: Solve for x
    x = 242,993,734.85/18,949.29
  6. Step 6: Final answer
    x = 12,823.37

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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.