Home / 13,829.90-20,747.93-3,968.42

Finding the Fourth Proportional to 13,829.90, 20,747.93 and 3,968.42

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Solution

The fourth proportional to 13,829.90, 20,747.93 and 3,968.42 is: 5,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.90 : 20,747.93 = 3,968.42 : x
  2. Step 2: Convert to fraction form
    13,829.90/20,747.93 = 3,968.42/x
  3. Step 3: Cross multiply
    13,829.90x = 20,747.93 × 3,968.42
  4. Step 4: Simplify right side
    13,829.90x = 82,336,376.79
  5. Step 5: Solve for x
    x = 82,336,376.79/13,829.90
  6. Step 6: Final answer
    x = 5,953.51

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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.