Home / 11,190.30-16,787.90-3,399.72

Finding the Fourth Proportional to 11,190.30, 16,787.90 and 3,399.72

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Solution

The fourth proportional to 11,190.30, 16,787.90 and 3,399.72 is: 5,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.30 : 16,787.90 = 3,399.72 : x
  2. Step 2: Convert to fraction form
    11,190.30/16,787.90 = 3,399.72/x
  3. Step 3: Cross multiply
    11,190.30x = 16,787.90 × 3,399.72
  4. Step 4: Simplify right side
    11,190.30x = 57,074,159.39
  5. Step 5: Solve for x
    x = 57,074,159.39/11,190.30
  6. Step 6: Final answer
    x = 5,100.32

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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.