Home / 11,961.88-17,931.17-5,720.27

Finding the Fourth Proportional to 11,961.88, 17,931.17 and 5,720.27

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Solution

The fourth proportional to 11,961.88, 17,931.17 and 5,720.27 is: 8,574.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.88 : 17,931.17 = 5,720.27 : x
  2. Step 2: Convert to fraction form
    11,961.88/17,931.17 = 5,720.27/x
  3. Step 3: Cross multiply
    11,961.88x = 17,931.17 × 5,720.27
  4. Step 4: Simplify right side
    11,961.88x = 102,571,088.99
  5. Step 5: Solve for x
    x = 102,571,088.99/11,961.88
  6. Step 6: Final answer
    x = 8,574.83

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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.