Home / 13,358.70-18,419.94-11,375.82

Finding the Fourth Proportional to 13,358.70, 18,419.94 and 11,375.82

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Solution

The fourth proportional to 13,358.70, 18,419.94 and 11,375.82 is: 15,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.70 : 18,419.94 = 11,375.82 : x
  2. Step 2: Convert to fraction form
    13,358.70/18,419.94 = 11,375.82/x
  3. Step 3: Cross multiply
    13,358.70x = 18,419.94 × 11,375.82
  4. Step 4: Simplify right side
    13,358.70x = 209,541,921.85
  5. Step 5: Solve for x
    x = 209,541,921.85/13,358.70
  6. Step 6: Final answer
    x = 15,685.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.