Home / 13,764.28-20,639.13-5,443.96

Finding the Fourth Proportional to 13,764.28, 20,639.13 and 5,443.96

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Solution

The fourth proportional to 13,764.28, 20,639.13 and 5,443.96 is: 8,163.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.28 : 20,639.13 = 5,443.96 : x
  2. Step 2: Convert to fraction form
    13,764.28/20,639.13 = 5,443.96/x
  3. Step 3: Cross multiply
    13,764.28x = 20,639.13 × 5,443.96
  4. Step 4: Simplify right side
    13,764.28x = 112,358,598.15
  5. Step 5: Solve for x
    x = 112,358,598.15/13,764.28
  6. Step 6: Final answer
    x = 8,163.06

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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.