Home / 11,913.06-17,865.03-4,119.78

Finding the Fourth Proportional to 11,913.06, 17,865.03 and 4,119.78

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Solution

The fourth proportional to 11,913.06, 17,865.03 and 4,119.78 is: 6,178.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.06 : 17,865.03 = 4,119.78 : x
  2. Step 2: Convert to fraction form
    11,913.06/17,865.03 = 4,119.78/x
  3. Step 3: Cross multiply
    11,913.06x = 17,865.03 × 4,119.78
  4. Step 4: Simplify right side
    11,913.06x = 73,599,993.29
  5. Step 5: Solve for x
    x = 73,599,993.29/11,913.06
  6. Step 6: Final answer
    x = 6,178.09

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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.