Home / 11,811.75-17,720.51-3,603.75

Finding the Fourth Proportional to 11,811.75, 17,720.51 and 3,603.75

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Solution

The fourth proportional to 11,811.75, 17,720.51 and 3,603.75 is: 5,406.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.75 : 17,720.51 = 3,603.75 : x
  2. Step 2: Convert to fraction form
    11,811.75/17,720.51 = 3,603.75/x
  3. Step 3: Cross multiply
    11,811.75x = 17,720.51 × 3,603.75
  4. Step 4: Simplify right side
    11,811.75x = 63,860,287.91
  5. Step 5: Solve for x
    x = 63,860,287.91/11,811.75
  6. Step 6: Final answer
    x = 5,406.51

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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.