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Finding the Fourth Proportional to 18,855.66, 28,283.60 and 6,375.77

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Solution

The fourth proportional to 18,855.66, 28,283.60 and 6,375.77 is: 9,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.66 : 28,283.60 = 6,375.77 : x
  2. Step 2: Convert to fraction form
    18,855.66/28,283.60 = 6,375.77/x
  3. Step 3: Cross multiply
    18,855.66x = 28,283.60 × 6,375.77
  4. Step 4: Simplify right side
    18,855.66x = 180,329,728.37
  5. Step 5: Solve for x
    x = 180,329,728.37/18,855.66
  6. Step 6: Final answer
    x = 9,563.69

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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.