Home / 20,011.38-30,020.04-6,679.86

Finding the Fourth Proportional to 20,011.38, 30,020.04 and 6,679.86

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Solution

The fourth proportional to 20,011.38, 30,020.04 and 6,679.86 is: 10,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011.38 : 30,020.04 = 6,679.86 : x
  2. Step 2: Convert to fraction form
    20,011.38/30,020.04 = 6,679.86/x
  3. Step 3: Cross multiply
    20,011.38x = 30,020.04 × 6,679.86
  4. Step 4: Simplify right side
    20,011.38x = 200,529,664.39
  5. Step 5: Solve for x
    x = 200,529,664.39/20,011.38
  6. Step 6: Final answer
    x = 10,020.78

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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.