Home / 13,919.26-20,878.92-3,389.28

Finding the Fourth Proportional to 13,919.26, 20,878.92 and 3,389.28

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Solution

The fourth proportional to 13,919.26, 20,878.92 and 3,389.28 is: 5,083.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.26 : 20,878.92 = 3,389.28 : x
  2. Step 2: Convert to fraction form
    13,919.26/20,878.92 = 3,389.28/x
  3. Step 3: Cross multiply
    13,919.26x = 20,878.92 × 3,389.28
  4. Step 4: Simplify right side
    13,919.26x = 70,764,489.03
  5. Step 5: Solve for x
    x = 70,764,489.03/13,919.26
  6. Step 6: Final answer
    x = 5,083.93

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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.