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Finding the Fourth Proportional to 18,658.98, 27,993.60 and 5,511.35

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Solution

The fourth proportional to 18,658.98, 27,993.60 and 5,511.35 is: 8,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.98 : 27,993.60 = 5,511.35 : x
  2. Step 2: Convert to fraction form
    18,658.98/27,993.60 = 5,511.35/x
  3. Step 3: Cross multiply
    18,658.98x = 27,993.60 × 5,511.35
  4. Step 4: Simplify right side
    18,658.98x = 154,282,387.39
  5. Step 5: Solve for x
    x = 154,282,387.39/18,658.98
  6. Step 6: Final answer
    x = 8,268.53

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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.