Home / 20,116.13-27,761.21-11,163.71

Finding the Fourth Proportional to 20,116.13, 27,761.21 and 11,163.71

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Solution

The fourth proportional to 20,116.13, 27,761.21 and 11,163.71 is: 15,406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.13 : 27,761.21 = 11,163.71 : x
  2. Step 2: Convert to fraction form
    20,116.13/27,761.21 = 11,163.71/x
  3. Step 3: Cross multiply
    20,116.13x = 27,761.21 × 11,163.71
  4. Step 4: Simplify right side
    20,116.13x = 309,917,903.06
  5. Step 5: Solve for x
    x = 309,917,903.06/20,116.13
  6. Step 6: Final answer
    x = 15,406.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.