Home / 18,125.80-27,189.60-6,439.93

Finding the Fourth Proportional to 18,125.80, 27,189.60 and 6,439.93

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Solution

The fourth proportional to 18,125.80, 27,189.60 and 6,439.93 is: 9,660.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.80 : 27,189.60 = 6,439.93 : x
  2. Step 2: Convert to fraction form
    18,125.80/27,189.60 = 6,439.93/x
  3. Step 3: Cross multiply
    18,125.80x = 27,189.60 × 6,439.93
  4. Step 4: Simplify right side
    18,125.80x = 175,099,120.73
  5. Step 5: Solve for x
    x = 175,099,120.73/18,125.80
  6. Step 6: Final answer
    x = 9,660.21

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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.