Home / 20,163.61-27,826.42-11,211.49

Finding the Fourth Proportional to 20,163.61, 27,826.42 and 11,211.49

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Solution

The fourth proportional to 20,163.61, 27,826.42 and 11,211.49 is: 15,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.61 : 27,826.42 = 11,211.49 : x
  2. Step 2: Convert to fraction form
    20,163.61/27,826.42 = 11,211.49/x
  3. Step 3: Cross multiply
    20,163.61x = 27,826.42 × 11,211.49
  4. Step 4: Simplify right side
    20,163.61x = 311,975,629.57
  5. Step 5: Solve for x
    x = 311,975,629.57/20,163.61
  6. Step 6: Final answer
    x = 15,472.21

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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.