Home / 20,770.92-31,144.86-6,912.36

Finding the Fourth Proportional to 20,770.92, 31,144.86 and 6,912.36

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Solution

The fourth proportional to 20,770.92, 31,144.86 and 6,912.36 is: 10,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.92 : 31,144.86 = 6,912.36 : x
  2. Step 2: Convert to fraction form
    20,770.92/31,144.86 = 6,912.36/x
  3. Step 3: Cross multiply
    20,770.92x = 31,144.86 × 6,912.36
  4. Step 4: Simplify right side
    20,770.92x = 215,284,484.47
  5. Step 5: Solve for x
    x = 215,284,484.47/20,770.92
  6. Step 6: Final answer
    x = 10,364.71

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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.