Home / 12,379.88-18,565.20-4,981.84

Finding the Fourth Proportional to 12,379.88, 18,565.20 and 4,981.84

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Solution

The fourth proportional to 12,379.88, 18,565.20 and 4,981.84 is: 7,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.88 : 18,565.20 = 4,981.84 : x
  2. Step 2: Convert to fraction form
    12,379.88/18,565.20 = 4,981.84/x
  3. Step 3: Cross multiply
    12,379.88x = 18,565.20 × 4,981.84
  4. Step 4: Simplify right side
    12,379.88x = 92,488,855.97
  5. Step 5: Solve for x
    x = 92,488,855.97/12,379.88
  6. Step 6: Final answer
    x = 7,470.90

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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.