Home / 11,115.36-16,671.30-3,719.76

Finding the Fourth Proportional to 11,115.36, 16,671.30 and 3,719.76

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Solution

The fourth proportional to 11,115.36, 16,671.30 and 3,719.76 is: 5,579.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.36 : 16,671.30 = 3,719.76 : x
  2. Step 2: Convert to fraction form
    11,115.36/16,671.30 = 3,719.76/x
  3. Step 3: Cross multiply
    11,115.36x = 16,671.30 × 3,719.76
  4. Step 4: Simplify right side
    11,115.36x = 62,013,234.89
  5. Step 5: Solve for x
    x = 62,013,234.89/11,115.36
  6. Step 6: Final answer
    x = 5,579.06

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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.