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Finding the Fourth Proportional to 20,027.91, 30,043.91 and 6,878.58

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Solution

The fourth proportional to 20,027.91, 30,043.91 and 6,878.58 is: 10,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,027.91 : 30,043.91 = 6,878.58 : x
  2. Step 2: Convert to fraction form
    20,027.91/30,043.91 = 6,878.58/x
  3. Step 3: Cross multiply
    20,027.91x = 30,043.91 × 6,878.58
  4. Step 4: Simplify right side
    20,027.91x = 206,659,438.45
  5. Step 5: Solve for x
    x = 206,659,438.45/20,027.91
  6. Step 6: Final answer
    x = 10,318.57

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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.