Home / 10,787.72-16,171.99-4,212.41

Finding the Fourth Proportional to 10,787.72, 16,171.99 and 4,212.41

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Solution

The fourth proportional to 10,787.72, 16,171.99 and 4,212.41 is: 6,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.72 : 16,171.99 = 4,212.41 : x
  2. Step 2: Convert to fraction form
    10,787.72/16,171.99 = 4,212.41/x
  3. Step 3: Cross multiply
    10,787.72x = 16,171.99 × 4,212.41
  4. Step 4: Simplify right side
    10,787.72x = 68,122,961.00
  5. Step 5: Solve for x
    x = 68,122,961.00/10,787.72
  6. Step 6: Final answer
    x = 6,314.86

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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.