Home / 18,745.20-25,871.52-11,191.92

Finding the Fourth Proportional to 18,745.20, 25,871.52 and 11,191.92

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Solution

The fourth proportional to 18,745.20, 25,871.52 and 11,191.92 is: 15,446.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.20 : 25,871.52 = 11,191.92 : x
  2. Step 2: Convert to fraction form
    18,745.20/25,871.52 = 11,191.92/x
  3. Step 3: Cross multiply
    18,745.20x = 25,871.52 × 11,191.92
  4. Step 4: Simplify right side
    18,745.20x = 289,551,982.12
  5. Step 5: Solve for x
    x = 289,551,982.12/18,745.20
  6. Step 6: Final answer
    x = 15,446.73

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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.