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Finding the Fourth Proportional to 20,379.11, 30,573.06 and 6,338.86

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Solution

The fourth proportional to 20,379.11, 30,573.06 and 6,338.86 is: 9,509.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.11 : 30,573.06 = 6,338.86 : x
  2. Step 2: Convert to fraction form
    20,379.11/30,573.06 = 6,338.86/x
  3. Step 3: Cross multiply
    20,379.11x = 30,573.06 × 6,338.86
  4. Step 4: Simplify right side
    20,379.11x = 193,798,162.55
  5. Step 5: Solve for x
    x = 193,798,162.55/20,379.11
  6. Step 6: Final answer
    x = 9,509.65

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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.