Home / 13,849.86-20,768.64-3,986.83

Finding the Fourth Proportional to 13,849.86, 20,768.64 and 3,986.83

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Solution

The fourth proportional to 13,849.86, 20,768.64 and 3,986.83 is: 5,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.86 : 20,768.64 = 3,986.83 : x
  2. Step 2: Convert to fraction form
    13,849.86/20,768.64 = 3,986.83/x
  3. Step 3: Cross multiply
    13,849.86x = 20,768.64 × 3,986.83
  4. Step 4: Simplify right side
    13,849.86x = 82,801,094.05
  5. Step 5: Solve for x
    x = 82,801,094.05/13,849.86
  6. Step 6: Final answer
    x = 5,978.48

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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.