Home / 20,072.42-30,108.63-8,379.26

Finding the Fourth Proportional to 20,072.42, 30,108.63 and 8,379.26

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Solution

The fourth proportional to 20,072.42, 30,108.63 and 8,379.26 is: 12,568.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.42 : 30,108.63 = 8,379.26 : x
  2. Step 2: Convert to fraction form
    20,072.42/30,108.63 = 8,379.26/x
  3. Step 3: Cross multiply
    20,072.42x = 30,108.63 × 8,379.26
  4. Step 4: Simplify right side
    20,072.42x = 252,288,039.01
  5. Step 5: Solve for x
    x = 252,288,039.01/20,072.42
  6. Step 6: Final answer
    x = 12,568.89

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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.