Home / 18,438.11-27,660.73-7,906.66

Finding the Fourth Proportional to 18,438.11, 27,660.73 and 7,906.66

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Solution

The fourth proportional to 18,438.11, 27,660.73 and 7,906.66 is: 11,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.11 : 27,660.73 = 7,906.66 : x
  2. Step 2: Convert to fraction form
    18,438.11/27,660.73 = 7,906.66/x
  3. Step 3: Cross multiply
    18,438.11x = 27,660.73 × 7,906.66
  4. Step 4: Simplify right side
    18,438.11x = 218,703,967.70
  5. Step 5: Solve for x
    x = 218,703,967.70/18,438.11
  6. Step 6: Final answer
    x = 11,861.52

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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.