Home / 18,115.40-27,173.20-8,247.78

Finding the Fourth Proportional to 18,115.40, 27,173.20 and 8,247.78

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Solution

The fourth proportional to 18,115.40, 27,173.20 and 8,247.78 is: 12,371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.40 : 27,173.20 = 8,247.78 : x
  2. Step 2: Convert to fraction form
    18,115.40/27,173.20 = 8,247.78/x
  3. Step 3: Cross multiply
    18,115.40x = 27,173.20 × 8,247.78
  4. Step 4: Simplify right side
    18,115.40x = 224,118,575.50
  5. Step 5: Solve for x
    x = 224,118,575.50/18,115.40
  6. Step 6: Final answer
    x = 12,371.72

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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.