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Finding the Fourth Proportional to 18,725.87, 28,092.86 and 5,579.30

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Solution

The fourth proportional to 18,725.87, 28,092.86 and 5,579.30 is: 8,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.87 : 28,092.86 = 5,579.30 : x
  2. Step 2: Convert to fraction form
    18,725.87/28,092.86 = 5,579.30/x
  3. Step 3: Cross multiply
    18,725.87x = 28,092.86 × 5,579.30
  4. Step 4: Simplify right side
    18,725.87x = 156,738,325.44
  5. Step 5: Solve for x
    x = 156,738,325.44/18,725.87
  6. Step 6: Final answer
    x = 8,370.15

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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.