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Finding the Fourth Proportional to 18,855.39, 28,283.15 and 6,375.52

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Solution

The fourth proportional to 18,855.39, 28,283.15 and 6,375.52 is: 9,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.39 : 28,283.15 = 6,375.52 : x
  2. Step 2: Convert to fraction form
    18,855.39/28,283.15 = 6,375.52/x
  3. Step 3: Cross multiply
    18,855.39x = 28,283.15 × 6,375.52
  4. Step 4: Simplify right side
    18,855.39x = 180,319,788.49
  5. Step 5: Solve for x
    x = 180,319,788.49/18,855.39
  6. Step 6: Final answer
    x = 9,563.30

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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.