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Finding the Fourth Proportional to 19,273.98, 28,912.38 and 8,179.41

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Solution

The fourth proportional to 19,273.98, 28,912.38 and 8,179.41 is: 12,269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,273.98 : 28,912.38 = 8,179.41 : x
  2. Step 2: Convert to fraction form
    19,273.98/28,912.38 = 8,179.41/x
  3. Step 3: Cross multiply
    19,273.98x = 28,912.38 × 8,179.41
  4. Step 4: Simplify right side
    19,273.98x = 236,486,210.10
  5. Step 5: Solve for x
    x = 236,486,210.10/19,273.98
  6. Step 6: Final answer
    x = 12,269.71

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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.