Home / 13,221.82-19,829.66-3,859.86

Finding the Fourth Proportional to 13,221.82, 19,829.66 and 3,859.86

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Solution

The fourth proportional to 13,221.82, 19,829.66 and 3,859.86 is: 5,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.82 : 19,829.66 = 3,859.86 : x
  2. Step 2: Convert to fraction form
    13,221.82/19,829.66 = 3,859.86/x
  3. Step 3: Cross multiply
    13,221.82x = 19,829.66 × 3,859.86
  4. Step 4: Simplify right side
    13,221.82x = 76,539,692.15
  5. Step 5: Solve for x
    x = 76,539,692.15/13,221.82
  6. Step 6: Final answer
    x = 5,788.89

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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.