Home / 20,868.59-31,305.81-6,829.73

Finding the Fourth Proportional to 20,868.59, 31,305.81 and 6,829.73

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Solution

The fourth proportional to 20,868.59, 31,305.81 and 6,829.73 is: 10,245.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.59 : 31,305.81 = 6,829.73 : x
  2. Step 2: Convert to fraction form
    20,868.59/31,305.81 = 6,829.73/x
  3. Step 3: Cross multiply
    20,868.59x = 31,305.81 × 6,829.73
  4. Step 4: Simplify right side
    20,868.59x = 213,810,073.20
  5. Step 5: Solve for x
    x = 213,810,073.20/20,868.59
  6. Step 6: Final answer
    x = 10,245.54

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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.