Home / 11,415.78-17,123.70-4,018.52

Finding the Fourth Proportional to 11,415.78, 17,123.70 and 4,018.52

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Solution

The fourth proportional to 11,415.78, 17,123.70 and 4,018.52 is: 6,027.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.78 : 17,123.70 = 4,018.52 : x
  2. Step 2: Convert to fraction form
    11,415.78/17,123.70 = 4,018.52/x
  3. Step 3: Cross multiply
    11,415.78x = 17,123.70 × 4,018.52
  4. Step 4: Simplify right side
    11,415.78x = 68,811,930.92
  5. Step 5: Solve for x
    x = 68,811,930.92/11,415.78
  6. Step 6: Final answer
    x = 6,027.79

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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.