Home / 20,768.38-31,149.50-6,729.64

Finding the Fourth Proportional to 20,768.38, 31,149.50 and 6,729.64

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Solution

The fourth proportional to 20,768.38, 31,149.50 and 6,729.64 is: 10,093.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.38 : 31,149.50 = 6,729.64 : x
  2. Step 2: Convert to fraction form
    20,768.38/31,149.50 = 6,729.64/x
  3. Step 3: Cross multiply
    20,768.38x = 31,149.50 × 6,729.64
  4. Step 4: Simplify right side
    20,768.38x = 209,624,870.60
  5. Step 5: Solve for x
    x = 209,624,870.60/20,768.38
  6. Step 6: Final answer
    x = 10,093.46

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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.