Home / 12,270.85-18,408.01-3,948.93

Finding the Fourth Proportional to 12,270.85, 18,408.01 and 3,948.93

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Solution

The fourth proportional to 12,270.85, 18,408.01 and 3,948.93 is: 5,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.85 : 18,408.01 = 3,948.93 : x
  2. Step 2: Convert to fraction form
    12,270.85/18,408.01 = 3,948.93/x
  3. Step 3: Cross multiply
    12,270.85x = 18,408.01 × 3,948.93
  4. Step 4: Simplify right side
    12,270.85x = 72,691,942.93
  5. Step 5: Solve for x
    x = 72,691,942.93/12,270.85
  6. Step 6: Final answer
    x = 5,923.95

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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.