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Finding the Fourth Proportional to 19,198.85, 28,793.95 and 6,886.85

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Solution

The fourth proportional to 19,198.85, 28,793.95 and 6,886.85 is: 10,328.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.85 : 28,793.95 = 6,886.85 : x
  2. Step 2: Convert to fraction form
    19,198.85/28,793.95 = 6,886.85/x
  3. Step 3: Cross multiply
    19,198.85x = 28,793.95 × 6,886.85
  4. Step 4: Simplify right side
    19,198.85x = 198,299,542.57
  5. Step 5: Solve for x
    x = 198,299,542.57/19,198.85
  6. Step 6: Final answer
    x = 10,328.72

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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.