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Finding the Fourth Proportional to 18,621.27, 27,925.97 and 6,138.97

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Solution

The fourth proportional to 18,621.27, 27,925.97 and 6,138.97 is: 9,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.27 : 27,925.97 = 6,138.97 : x
  2. Step 2: Convert to fraction form
    18,621.27/27,925.97 = 6,138.97/x
  3. Step 3: Cross multiply
    18,621.27x = 27,925.97 × 6,138.97
  4. Step 4: Simplify right side
    18,621.27x = 171,436,692.05
  5. Step 5: Solve for x
    x = 171,436,692.05/18,621.27
  6. Step 6: Final answer
    x = 9,206.50

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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.