Home / 11,916.28-17,874.42-4,120.84

Finding the Fourth Proportional to 11,916.28, 17,874.42 and 4,120.84

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Solution

The fourth proportional to 11,916.28, 17,874.42 and 4,120.84 is: 6,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.28 : 17,874.42 = 4,120.84 : x
  2. Step 2: Convert to fraction form
    11,916.28/17,874.42 = 4,120.84/x
  3. Step 3: Cross multiply
    11,916.28x = 17,874.42 × 4,120.84
  4. Step 4: Simplify right side
    11,916.28x = 73,657,624.91
  5. Step 5: Solve for x
    x = 73,657,624.91/11,916.28
  6. Step 6: Final answer
    x = 6,181.26

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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.