Home / 18,129.49-27,191.09-4,978.73

Finding the Fourth Proportional to 18,129.49, 27,191.09 and 4,978.73

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Solution

The fourth proportional to 18,129.49, 27,191.09 and 4,978.73 is: 7,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.49 : 27,191.09 = 4,978.73 : x
  2. Step 2: Convert to fraction form
    18,129.49/27,191.09 = 4,978.73/x
  3. Step 3: Cross multiply
    18,129.49x = 27,191.09 × 4,978.73
  4. Step 4: Simplify right side
    18,129.49x = 135,377,175.94
  5. Step 5: Solve for x
    x = 135,377,175.94/18,129.49
  6. Step 6: Final answer
    x = 7,467.24

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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.