Home / 18,212.52-27,311.14-7,687.28

Finding the Fourth Proportional to 18,212.52, 27,311.14 and 7,687.28

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Solution

The fourth proportional to 18,212.52, 27,311.14 and 7,687.28 is: 11,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.52 : 27,311.14 = 7,687.28 : x
  2. Step 2: Convert to fraction form
    18,212.52/27,311.14 = 7,687.28/x
  3. Step 3: Cross multiply
    18,212.52x = 27,311.14 × 7,687.28
  4. Step 4: Simplify right side
    18,212.52x = 209,948,380.30
  5. Step 5: Solve for x
    x = 209,948,380.30/18,212.52
  6. Step 6: Final answer
    x = 11,527.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.