Home / 11,813.85-17,720.51-5,576.78

Finding the Fourth Proportional to 11,813.85, 17,720.51 and 5,576.78

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Solution

The fourth proportional to 11,813.85, 17,720.51 and 5,576.78 is: 8,365.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.85 : 17,720.51 = 5,576.78 : x
  2. Step 2: Convert to fraction form
    11,813.85/17,720.51 = 5,576.78/x
  3. Step 3: Cross multiply
    11,813.85x = 17,720.51 × 5,576.78
  4. Step 4: Simplify right side
    11,813.85x = 98,823,297.16
  5. Step 5: Solve for x
    x = 98,823,297.16/11,813.85
  6. Step 6: Final answer
    x = 8,365.04

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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.