Home / 11,916.06-17,869.52-4,122.78

Finding the Fourth Proportional to 11,916.06, 17,869.52 and 4,122.78

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Solution

The fourth proportional to 11,916.06, 17,869.52 and 4,122.78 is: 6,182.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.06 : 17,869.52 = 4,122.78 : x
  2. Step 2: Convert to fraction form
    11,916.06/17,869.52 = 4,122.78/x
  3. Step 3: Cross multiply
    11,916.06x = 17,869.52 × 4,122.78
  4. Step 4: Simplify right side
    11,916.06x = 73,672,099.67
  5. Step 5: Solve for x
    x = 73,672,099.67/11,916.06
  6. Step 6: Final answer
    x = 6,182.59

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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.