Home / 11,916.20-17,872.32-3,151.64

Finding the Fourth Proportional to 11,916.20, 17,872.32 and 3,151.64

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Solution

The fourth proportional to 11,916.20, 17,872.32 and 3,151.64 is: 4,726.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.20 : 17,872.32 = 3,151.64 : x
  2. Step 2: Convert to fraction form
    11,916.20/17,872.32 = 3,151.64/x
  3. Step 3: Cross multiply
    11,916.20x = 17,872.32 × 3,151.64
  4. Step 4: Simplify right side
    11,916.20x = 56,327,118.60
  5. Step 5: Solve for x
    x = 56,327,118.60/11,916.20
  6. Step 6: Final answer
    x = 4,726.94

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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.