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Finding the Fourth Proportional to 20,378.44, 30,565.61 and 5,588.84

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Solution

The fourth proportional to 20,378.44, 30,565.61 and 5,588.84 is: 8,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.44 : 30,565.61 = 5,588.84 : x
  2. Step 2: Convert to fraction form
    20,378.44/30,565.61 = 5,588.84/x
  3. Step 3: Cross multiply
    20,378.44x = 30,565.61 × 5,588.84
  4. Step 4: Simplify right side
    20,378.44x = 170,826,275.85
  5. Step 5: Solve for x
    x = 170,826,275.85/20,378.44
  6. Step 6: Final answer
    x = 8,382.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.