Home / 18,855.20-28,281.36-6,375.44

Finding the Fourth Proportional to 18,855.20, 28,281.36 and 6,375.44

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Solution

The fourth proportional to 18,855.20, 28,281.36 and 6,375.44 is: 9,562.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.20 : 28,281.36 = 6,375.44 : x
  2. Step 2: Convert to fraction form
    18,855.20/28,281.36 = 6,375.44/x
  3. Step 3: Cross multiply
    18,855.20x = 28,281.36 × 6,375.44
  4. Step 4: Simplify right side
    18,855.20x = 180,306,113.80
  5. Step 5: Solve for x
    x = 180,306,113.80/18,855.20
  6. Step 6: Final answer
    x = 9,562.67

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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.