Home / 18,129.55-27,168.03-12,874.85

Finding the Fourth Proportional to 18,129.55, 27,168.03 and 12,874.85

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Solution

The fourth proportional to 18,129.55, 27,168.03 and 12,874.85 is: 19,293.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.55 : 27,168.03 = 12,874.85 : x
  2. Step 2: Convert to fraction form
    18,129.55/27,168.03 = 12,874.85/x
  3. Step 3: Cross multiply
    18,129.55x = 27,168.03 × 12,874.85
  4. Step 4: Simplify right side
    18,129.55x = 349,784,313.30
  5. Step 5: Solve for x
    x = 349,784,313.30/18,129.55
  6. Step 6: Final answer
    x = 19,293.61

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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.