Home / 18,121.56-27,178.08-4,974.96

Finding the Fourth Proportional to 18,121.56, 27,178.08 and 4,974.96

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Solution

The fourth proportional to 18,121.56, 27,178.08 and 4,974.96 is: 7,461.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.56 : 27,178.08 = 4,974.96 : x
  2. Step 2: Convert to fraction form
    18,121.56/27,178.08 = 4,974.96/x
  3. Step 3: Cross multiply
    18,121.56x = 27,178.08 × 4,974.96
  4. Step 4: Simplify right side
    18,121.56x = 135,209,860.88
  5. Step 5: Solve for x
    x = 135,209,860.88/18,121.56
  6. Step 6: Final answer
    x = 7,461.27

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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.