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Finding the Fourth Proportional to 18,902.14, 28,352.06 and 8,369.09

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Solution

The fourth proportional to 18,902.14, 28,352.06 and 8,369.09 is: 12,553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.14 : 28,352.06 = 8,369.09 : x
  2. Step 2: Convert to fraction form
    18,902.14/28,352.06 = 8,369.09/x
  3. Step 3: Cross multiply
    18,902.14x = 28,352.06 × 8,369.09
  4. Step 4: Simplify right side
    18,902.14x = 237,280,895.92
  5. Step 5: Solve for x
    x = 237,280,895.92/18,902.14
  6. Step 6: Final answer
    x = 12,553.13

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1.5x scale

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.