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Finding the Fourth Proportional to 20,029.89, 30,028.64 and 8,351.85

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Solution

The fourth proportional to 20,029.89, 30,028.64 and 8,351.85 is: 12,521.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.89 : 30,028.64 = 8,351.85 : x
  2. Step 2: Convert to fraction form
    20,029.89/30,028.64 = 8,351.85/x
  3. Step 3: Cross multiply
    20,029.89x = 30,028.64 × 8,351.85
  4. Step 4: Simplify right side
    20,029.89x = 250,794,655.22
  5. Step 5: Solve for x
    x = 250,794,655.22/20,029.89
  6. Step 6: Final answer
    x = 12,521.02

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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.