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Finding the Fourth Proportional to 13,161.13, 19,745.11 and 3,927.13

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Solution

The fourth proportional to 13,161.13, 19,745.11 and 3,927.13 is: 5,891.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.13 : 19,745.11 = 3,927.13 : x
  2. Step 2: Convert to fraction form
    13,161.13/19,745.11 = 3,927.13/x
  3. Step 3: Cross multiply
    13,161.13x = 19,745.11 × 3,927.13
  4. Step 4: Simplify right side
    13,161.13x = 77,541,505.29
  5. Step 5: Solve for x
    x = 77,541,505.29/13,161.13
  6. Step 6: Final answer
    x = 5,891.71

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1.5x scale

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.