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Finding the Fourth Proportional to 20,375.56, 30,569.52 and 9,845.86

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Solution

The fourth proportional to 20,375.56, 30,569.52 and 9,845.86 is: 14,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.56 : 30,569.52 = 9,845.86 : x
  2. Step 2: Convert to fraction form
    20,375.56/30,569.52 = 9,845.86/x
  3. Step 3: Cross multiply
    20,375.56x = 30,569.52 × 9,845.86
  4. Step 4: Simplify right side
    20,375.56x = 300,983,214.19
  5. Step 5: Solve for x
    x = 300,983,214.19/20,375.56
  6. Step 6: Final answer
    x = 14,771.78

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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.