Home / 13,829.49-20,744.35-3,969.08

Finding the Fourth Proportional to 13,829.49, 20,744.35 and 3,969.08

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Solution

The fourth proportional to 13,829.49, 20,744.35 and 3,969.08 is: 5,953.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.49 : 20,744.35 = 3,969.08 : x
  2. Step 2: Convert to fraction form
    13,829.49/20,744.35 = 3,969.08/x
  3. Step 3: Cross multiply
    13,829.49x = 20,744.35 × 3,969.08
  4. Step 4: Simplify right side
    13,829.49x = 82,335,984.70
  5. Step 5: Solve for x
    x = 82,335,984.70/13,829.49
  6. Step 6: Final answer
    x = 5,953.65

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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.