Home / 11,417.55-17,129.07-3,921

Finding the Fourth Proportional to 11,417.55, 17,129.07 and 3,921

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Solution

The fourth proportional to 11,417.55, 17,129.07 and 3,921 is: 5,882.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,417.55 : 17,129.07 = 3,921 : x
  2. Step 2: Convert to fraction form
    11,417.55/17,129.07 = 3,921/x
  3. Step 3: Cross multiply
    11,417.55x = 17,129.07 × 3,921
  4. Step 4: Simplify right side
    11,417.55x = 67,163,083.47
  5. Step 5: Solve for x
    x = 67,163,083.47/11,417.55
  6. Step 6: Final answer
    x = 5,882.44

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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.