Home / 11,813.53-17,720.32-11,091.82

Finding the Fourth Proportional to 11,813.53, 17,720.32 and 11,091.82

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Solution

The fourth proportional to 11,813.53, 17,720.32 and 11,091.82 is: 16,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.53 : 17,720.32 = 11,091.82 : x
  2. Step 2: Convert to fraction form
    11,813.53/17,720.32 = 11,091.82/x
  3. Step 3: Cross multiply
    11,813.53x = 17,720.32 × 11,091.82
  4. Step 4: Simplify right side
    11,813.53x = 196,550,544.32
  5. Step 5: Solve for x
    x = 196,550,544.32/11,813.53
  6. Step 6: Final answer
    x = 16,637.75

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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.