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Finding the Fourth Proportional to 20,499.54, 30,757.05 and 8,028.47

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Solution

The fourth proportional to 20,499.54, 30,757.05 and 8,028.47 is: 12,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.54 : 30,757.05 = 8,028.47 : x
  2. Step 2: Convert to fraction form
    20,499.54/30,757.05 = 8,028.47/x
  3. Step 3: Cross multiply
    20,499.54x = 30,757.05 × 8,028.47
  4. Step 4: Simplify right side
    20,499.54x = 246,932,130.11
  5. Step 5: Solve for x
    x = 246,932,130.11/20,499.54
  6. Step 6: Final answer
    x = 12,045.74

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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.