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Finding the Fourth Proportional to 18,881.67, 28,321.05 and 5,734.11

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Solution

The fourth proportional to 18,881.67, 28,321.05 and 5,734.11 is: 8,600.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.67 : 28,321.05 = 5,734.11 : x
  2. Step 2: Convert to fraction form
    18,881.67/28,321.05 = 5,734.11/x
  3. Step 3: Cross multiply
    18,881.67x = 28,321.05 × 5,734.11
  4. Step 4: Simplify right side
    18,881.67x = 162,396,016.02
  5. Step 5: Solve for x
    x = 162,396,016.02/18,881.67
  6. Step 6: Final answer
    x = 8,600.72

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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.