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Finding the Fourth Proportional to 18,675, 28,002.60 and 5,525.55

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Solution

The fourth proportional to 18,675, 28,002.60 and 5,525.55 is: 8,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675 : 28,002.60 = 5,525.55 : x
  2. Step 2: Convert to fraction form
    18,675/28,002.60 = 5,525.55/x
  3. Step 3: Cross multiply
    18,675x = 28,002.60 × 5,525.55
  4. Step 4: Simplify right side
    18,675x = 154,729,766.43
  5. Step 5: Solve for x
    x = 154,729,766.43/18,675
  6. Step 6: Final answer
    x = 8,285.40

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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.