Home / 20,163.82-27,826.40-11,089.54

Finding the Fourth Proportional to 20,163.82, 27,826.40 and 11,089.54

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Solution

The fourth proportional to 20,163.82, 27,826.40 and 11,089.54 is: 15,303.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.82 : 27,826.40 = 11,089.54 : x
  2. Step 2: Convert to fraction form
    20,163.82/27,826.40 = 11,089.54/x
  3. Step 3: Cross multiply
    20,163.82x = 27,826.40 × 11,089.54
  4. Step 4: Simplify right side
    20,163.82x = 308,581,975.86
  5. Step 5: Solve for x
    x = 308,581,975.86/20,163.82
  6. Step 6: Final answer
    x = 15,303.75

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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.