Home / 13,436.28-20,163.20-5,116.37

Finding the Fourth Proportional to 13,436.28, 20,163.20 and 5,116.37

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Solution

The fourth proportional to 13,436.28, 20,163.20 and 5,116.37 is: 7,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.28 : 20,163.20 = 5,116.37 : x
  2. Step 2: Convert to fraction form
    13,436.28/20,163.20 = 5,116.37/x
  3. Step 3: Cross multiply
    13,436.28x = 20,163.20 × 5,116.37
  4. Step 4: Simplify right side
    13,436.28x = 103,162,265.19
  5. Step 5: Solve for x
    x = 103,162,265.19/13,436.28
  6. Step 6: Final answer
    x = 7,677.89

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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.