Home / 11,221.39-16,826.14-3,428.11

Finding the Fourth Proportional to 11,221.39, 16,826.14 and 3,428.11

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Solution

The fourth proportional to 11,221.39, 16,826.14 and 3,428.11 is: 5,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.39 : 16,826.14 = 3,428.11 : x
  2. Step 2: Convert to fraction form
    11,221.39/16,826.14 = 3,428.11/x
  3. Step 3: Cross multiply
    11,221.39x = 16,826.14 × 3,428.11
  4. Step 4: Simplify right side
    11,221.39x = 57,681,858.80
  5. Step 5: Solve for x
    x = 57,681,858.80/11,221.39
  6. Step 6: Final answer
    x = 5,140.35

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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.