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Finding the Fourth Proportional to 18,797.87, 28,211.19 and 6,962.86

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Solution

The fourth proportional to 18,797.87, 28,211.19 and 6,962.86 is: 10,449.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.87 : 28,211.19 = 6,962.86 : x
  2. Step 2: Convert to fraction form
    18,797.87/28,211.19 = 6,962.86/x
  3. Step 3: Cross multiply
    18,797.87x = 28,211.19 × 6,962.86
  4. Step 4: Simplify right side
    18,797.87x = 196,430,575.56
  5. Step 5: Solve for x
    x = 196,430,575.56/18,797.87
  6. Step 6: Final answer
    x = 10,449.62

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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.