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Finding the Fourth Proportional to 19,928.28, 29,893.96 and 8,076.41

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Solution

The fourth proportional to 19,928.28, 29,893.96 and 8,076.41 is: 12,115.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.28 : 29,893.96 = 8,076.41 : x
  2. Step 2: Convert to fraction form
    19,928.28/29,893.96 = 8,076.41/x
  3. Step 3: Cross multiply
    19,928.28x = 29,893.96 × 8,076.41
  4. Step 4: Simplify right side
    19,928.28x = 241,435,850.21
  5. Step 5: Solve for x
    x = 241,435,850.21/19,928.28
  6. Step 6: Final answer
    x = 12,115.24

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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.