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Finding the Fourth Proportional to 18,853.87, 28,282.18 and 6,369.75

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Solution

The fourth proportional to 18,853.87, 28,282.18 and 6,369.75 is: 9,555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.87 : 28,282.18 = 6,369.75 : x
  2. Step 2: Convert to fraction form
    18,853.87/28,282.18 = 6,369.75/x
  3. Step 3: Cross multiply
    18,853.87x = 28,282.18 × 6,369.75
  4. Step 4: Simplify right side
    18,853.87x = 180,150,416.06
  5. Step 5: Solve for x
    x = 180,150,416.06/18,853.87
  6. Step 6: Final answer
    x = 9,555.09

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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.