Home / 20,849.55-28,765.26-11,890.59

Finding the Fourth Proportional to 20,849.55, 28,765.26 and 11,890.59

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Solution

The fourth proportional to 20,849.55, 28,765.26 and 11,890.59 is: 16,404.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.55 : 28,765.26 = 11,890.59 : x
  2. Step 2: Convert to fraction form
    20,849.55/28,765.26 = 11,890.59/x
  3. Step 3: Cross multiply
    20,849.55x = 28,765.26 × 11,890.59
  4. Step 4: Simplify right side
    20,849.55x = 342,035,912.90
  5. Step 5: Solve for x
    x = 342,035,912.90/20,849.55
  6. Step 6: Final answer
    x = 16,404.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.