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Finding the Fourth Proportional to 20,379.10, 30,573.05 and 6,338.86

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Solution

The fourth proportional to 20,379.10, 30,573.05 and 6,338.86 is: 9,509.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.10 : 30,573.05 = 6,338.86 : x
  2. Step 2: Convert to fraction form
    20,379.10/30,573.05 = 6,338.86/x
  3. Step 3: Cross multiply
    20,379.10x = 30,573.05 × 6,338.86
  4. Step 4: Simplify right side
    20,379.10x = 193,798,283.72
  5. Step 5: Solve for x
    x = 193,798,283.72/20,379.10
  6. Step 6: Final answer
    x = 9,509.66

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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.