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Finding the Fourth Proportional to 18,815.30, 28,222.05 and 6,334.10

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Solution

The fourth proportional to 18,815.30, 28,222.05 and 6,334.10 is: 9,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.30 : 28,222.05 = 6,334.10 : x
  2. Step 2: Convert to fraction form
    18,815.30/28,222.05 = 6,334.10/x
  3. Step 3: Cross multiply
    18,815.30x = 28,222.05 × 6,334.10
  4. Step 4: Simplify right side
    18,815.30x = 178,761,286.91
  5. Step 5: Solve for x
    x = 178,761,286.91/18,815.30
  6. Step 6: Final answer
    x = 9,500.85

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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.