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Finding the Fourth Proportional to 18,886.27, 28,331.00 and 5,738.75

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Solution

The fourth proportional to 18,886.27, 28,331.00 and 5,738.75 is: 8,608.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.27 : 28,331.00 = 5,738.75 : x
  2. Step 2: Convert to fraction form
    18,886.27/28,331.00 = 5,738.75/x
  3. Step 3: Cross multiply
    18,886.27x = 28,331.00 × 5,738.75
  4. Step 4: Simplify right side
    18,886.27x = 162,584,497.56
  5. Step 5: Solve for x
    x = 162,584,497.56/18,886.27
  6. Step 6: Final answer
    x = 8,608.61

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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.