Home / 13,879.06-20,815.35-4,015.69

Finding the Fourth Proportional to 13,879.06, 20,815.35 and 4,015.69

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Solution

The fourth proportional to 13,879.06, 20,815.35 and 4,015.69 is: 6,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.06 : 20,815.35 = 4,015.69 : x
  2. Step 2: Convert to fraction form
    13,879.06/20,815.35 = 4,015.69/x
  3. Step 3: Cross multiply
    13,879.06x = 20,815.35 × 4,015.69
  4. Step 4: Simplify right side
    13,879.06x = 83,587,992.84
  5. Step 5: Solve for x
    x = 83,587,992.84/13,879.06
  6. Step 6: Final answer
    x = 6,022.60

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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.