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Finding the Fourth Proportional to 20,385.66, 30,578.52 and 5,594.76

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Solution

The fourth proportional to 20,385.66, 30,578.52 and 5,594.76 is: 8,392.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.66 : 30,578.52 = 5,594.76 : x
  2. Step 2: Convert to fraction form
    20,385.66/30,578.52 = 5,594.76/x
  3. Step 3: Cross multiply
    20,385.66x = 30,578.52 × 5,594.76
  4. Step 4: Simplify right side
    20,385.66x = 171,079,480.56
  5. Step 5: Solve for x
    x = 171,079,480.56/20,385.66
  6. Step 6: Final answer
    x = 8,392.15

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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.