Home / 13,849.40-20,771.04-3,986.48

Finding the Fourth Proportional to 13,849.40, 20,771.04 and 3,986.48

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Solution

The fourth proportional to 13,849.40, 20,771.04 and 3,986.48 is: 5,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.40 : 20,771.04 = 3,986.48 : x
  2. Step 2: Convert to fraction form
    13,849.40/20,771.04 = 3,986.48/x
  3. Step 3: Cross multiply
    13,849.40x = 20,771.04 × 3,986.48
  4. Step 4: Simplify right side
    13,849.40x = 82,803,335.54
  5. Step 5: Solve for x
    x = 82,803,335.54/13,849.40
  6. Step 6: Final answer
    x = 5,978.84

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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.