Home / 11,390.29-17,091.81-4,821.39

Finding the Fourth Proportional to 11,390.29, 17,091.81 and 4,821.39

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Solution

The fourth proportional to 11,390.29, 17,091.81 and 4,821.39 is: 7,234.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.29 : 17,091.81 = 4,821.39 : x
  2. Step 2: Convert to fraction form
    11,390.29/17,091.81 = 4,821.39/x
  3. Step 3: Cross multiply
    11,390.29x = 17,091.81 × 4,821.39
  4. Step 4: Simplify right side
    11,390.29x = 82,406,257.71
  5. Step 5: Solve for x
    x = 82,406,257.71/11,390.29
  6. Step 6: Final answer
    x = 7,234.78

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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.