Home / 20,789.19-31,183.80-5,206.83

Finding the Fourth Proportional to 20,789.19, 31,183.80 and 5,206.83

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Solution

The fourth proportional to 20,789.19, 31,183.80 and 5,206.83 is: 7,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,789.19 : 31,183.80 = 5,206.83 : x
  2. Step 2: Convert to fraction form
    20,789.19/31,183.80 = 5,206.83/x
  3. Step 3: Cross multiply
    20,789.19x = 31,183.80 × 5,206.83
  4. Step 4: Simplify right side
    20,789.19x = 162,368,745.35
  5. Step 5: Solve for x
    x = 162,368,745.35/20,789.19
  6. Step 6: Final answer
    x = 7,810.25

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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.