Home / 13,977.23-19,286.42-8,311.86

Finding the Fourth Proportional to 13,977.23, 19,286.42 and 8,311.86

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Solution

The fourth proportional to 13,977.23, 19,286.42 and 8,311.86 is: 11,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.23 : 19,286.42 = 8,311.86 : x
  2. Step 2: Convert to fraction form
    13,977.23/19,286.42 = 8,311.86/x
  3. Step 3: Cross multiply
    13,977.23x = 19,286.42 × 8,311.86
  4. Step 4: Simplify right side
    13,977.23x = 160,305,981.38
  5. Step 5: Solve for x
    x = 160,305,981.38/13,977.23
  6. Step 6: Final answer
    x = 11,469.08

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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.