Home / 18,147.30-27,177.21-12,286.14

Finding the Fourth Proportional to 18,147.30, 27,177.21 and 12,286.14

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Solution

The fourth proportional to 18,147.30, 27,177.21 and 12,286.14 is: 18,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,147.30 : 27,177.21 = 12,286.14 : x
  2. Step 2: Convert to fraction form
    18,147.30/27,177.21 = 12,286.14/x
  3. Step 3: Cross multiply
    18,147.30x = 27,177.21 × 12,286.14
  4. Step 4: Simplify right side
    18,147.30x = 333,903,006.87
  5. Step 5: Solve for x
    x = 333,903,006.87/18,147.30
  6. Step 6: Final answer
    x = 18,399.60

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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.