Home / 13,817.12-20,725.89-3,428.88

Finding the Fourth Proportional to 13,817.12, 20,725.89 and 3,428.88

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Solution

The fourth proportional to 13,817.12, 20,725.89 and 3,428.88 is: 5,143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.12 : 20,725.89 = 3,428.88 : x
  2. Step 2: Convert to fraction form
    13,817.12/20,725.89 = 3,428.88/x
  3. Step 3: Cross multiply
    13,817.12x = 20,725.89 × 3,428.88
  4. Step 4: Simplify right side
    13,817.12x = 71,066,589.70
  5. Step 5: Solve for x
    x = 71,066,589.70/13,817.12
  6. Step 6: Final answer
    x = 5,143.37

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1.5x scale

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.