Home / 13,428.28-20,140.87-3,568.36

Finding the Fourth Proportional to 13,428.28, 20,140.87 and 3,568.36

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Solution

The fourth proportional to 13,428.28, 20,140.87 and 3,568.36 is: 5,352.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.28 : 20,140.87 = 3,568.36 : x
  2. Step 2: Convert to fraction form
    13,428.28/20,140.87 = 3,568.36/x
  3. Step 3: Cross multiply
    13,428.28x = 20,140.87 × 3,568.36
  4. Step 4: Simplify right side
    13,428.28x = 71,869,874.87
  5. Step 5: Solve for x
    x = 71,869,874.87/13,428.28
  6. Step 6: Final answer
    x = 5,352.13

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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.