Home / 13,286.97-19,931.60-3,426.17

Finding the Fourth Proportional to 13,286.97, 19,931.60 and 3,426.17

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Solution

The fourth proportional to 13,286.97, 19,931.60 and 3,426.17 is: 5,139.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.97 : 19,931.60 = 3,426.17 : x
  2. Step 2: Convert to fraction form
    13,286.97/19,931.60 = 3,426.17/x
  3. Step 3: Cross multiply
    13,286.97x = 19,931.60 × 3,426.17
  4. Step 4: Simplify right side
    13,286.97x = 68,288,958.88
  5. Step 5: Solve for x
    x = 68,288,958.88/13,286.97
  6. Step 6: Final answer
    x = 5,139.54

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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.