Home / 18,129.60-27,198.72-8,271.84

Finding the Fourth Proportional to 18,129.60, 27,198.72 and 8,271.84

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Solution

The fourth proportional to 18,129.60, 27,198.72 and 8,271.84 is: 12,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.60 : 27,198.72 = 8,271.84 : x
  2. Step 2: Convert to fraction form
    18,129.60/27,198.72 = 8,271.84/x
  3. Step 3: Cross multiply
    18,129.60x = 27,198.72 × 8,271.84
  4. Step 4: Simplify right side
    18,129.60x = 224,983,460.04
  5. Step 5: Solve for x
    x = 224,983,460.04/18,129.60
  6. Step 6: Final answer
    x = 12,409.73

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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.