Home / 11,390.24-17,074.98-3,990.68

Finding the Fourth Proportional to 11,390.24, 17,074.98 and 3,990.68

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Solution

The fourth proportional to 11,390.24, 17,074.98 and 3,990.68 is: 5,982.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.24 : 17,074.98 = 3,990.68 : x
  2. Step 2: Convert to fraction form
    11,390.24/17,074.98 = 3,990.68/x
  3. Step 3: Cross multiply
    11,390.24x = 17,074.98 × 3,990.68
  4. Step 4: Simplify right side
    11,390.24x = 68,140,781.19
  5. Step 5: Solve for x
    x = 68,140,781.19/11,390.24
  6. Step 6: Final answer
    x = 5,982.38

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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.