Home / 11,939.81-17,916.19-4,918.73

Finding the Fourth Proportional to 11,939.81, 17,916.19 and 4,918.73

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Solution

The fourth proportional to 11,939.81, 17,916.19 and 4,918.73 is: 7,380.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.81 : 17,916.19 = 4,918.73 : x
  2. Step 2: Convert to fraction form
    11,939.81/17,916.19 = 4,918.73/x
  3. Step 3: Cross multiply
    11,939.81x = 17,916.19 × 4,918.73
  4. Step 4: Simplify right side
    11,939.81x = 88,124,799.36
  5. Step 5: Solve for x
    x = 88,124,799.36/11,939.81
  6. Step 6: Final answer
    x = 7,380.76

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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.