Home / 20,951.42-31,426.37-6,911.06

Finding the Fourth Proportional to 20,951.42, 31,426.37 and 6,911.06

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Solution

The fourth proportional to 20,951.42, 31,426.37 and 6,911.06 is: 10,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.42 : 31,426.37 = 6,911.06 : x
  2. Step 2: Convert to fraction form
    20,951.42/31,426.37 = 6,911.06/x
  3. Step 3: Cross multiply
    20,951.42x = 31,426.37 × 6,911.06
  4. Step 4: Simplify right side
    20,951.42x = 217,189,336.97
  5. Step 5: Solve for x
    x = 217,189,336.97/20,951.42
  6. Step 6: Final answer
    x = 10,366.33

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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.