Home / 18,253.59-27,380.06-5,105.78

Finding the Fourth Proportional to 18,253.59, 27,380.06 and 5,105.78

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Solution

The fourth proportional to 18,253.59, 27,380.06 and 5,105.78 is: 7,658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.59 : 27,380.06 = 5,105.78 : x
  2. Step 2: Convert to fraction form
    18,253.59/27,380.06 = 5,105.78/x
  3. Step 3: Cross multiply
    18,253.59x = 27,380.06 × 5,105.78
  4. Step 4: Simplify right side
    18,253.59x = 139,796,562.75
  5. Step 5: Solve for x
    x = 139,796,562.75/18,253.59
  6. Step 6: Final answer
    x = 7,658.58

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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.