Home / 18,285.37-27,419.41-8,421.73

Finding the Fourth Proportional to 18,285.37, 27,419.41 and 8,421.73

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Solution

The fourth proportional to 18,285.37, 27,419.41 and 8,421.73 is: 12,628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.37 : 27,419.41 = 8,421.73 : x
  2. Step 2: Convert to fraction form
    18,285.37/27,419.41 = 8,421.73/x
  3. Step 3: Cross multiply
    18,285.37x = 27,419.41 × 8,421.73
  4. Step 4: Simplify right side
    18,285.37x = 230,918,867.78
  5. Step 5: Solve for x
    x = 230,918,867.78/18,285.37
  6. Step 6: Final answer
    x = 12,628.61

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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.