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Finding the Fourth Proportional to 13,371.52, 20,057.52 and 3,511.64

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Solution

The fourth proportional to 13,371.52, 20,057.52 and 3,511.64 is: 5,267.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.52 : 20,057.52 = 3,511.64 : x
  2. Step 2: Convert to fraction form
    13,371.52/20,057.52 = 3,511.64/x
  3. Step 3: Cross multiply
    13,371.52x = 20,057.52 × 3,511.64
  4. Step 4: Simplify right side
    13,371.52x = 70,434,789.53
  5. Step 5: Solve for x
    x = 70,434,789.53/13,371.52
  6. Step 6: Final answer
    x = 5,267.52

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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.