Home / 20,196.12-27,871.92-11,243.64

Finding the Fourth Proportional to 20,196.12, 27,871.92 and 11,243.64

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Solution

The fourth proportional to 20,196.12, 27,871.92 and 11,243.64 is: 15,516.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.12 : 27,871.92 = 11,243.64 : x
  2. Step 2: Convert to fraction form
    20,196.12/27,871.92 = 11,243.64/x
  3. Step 3: Cross multiply
    20,196.12x = 27,871.92 × 11,243.64
  4. Step 4: Simplify right side
    20,196.12x = 313,381,834.59
  5. Step 5: Solve for x
    x = 313,381,834.59/20,196.12
  6. Step 6: Final answer
    x = 15,516.93

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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.