Home / 10,780.74-16,171.11-4,919.94

Finding the Fourth Proportional to 10,780.74, 16,171.11 and 4,919.94

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Solution

The fourth proportional to 10,780.74, 16,171.11 and 4,919.94 is: 7,379.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.74 : 16,171.11 = 4,919.94 : x
  2. Step 2: Convert to fraction form
    10,780.74/16,171.11 = 4,919.94/x
  3. Step 3: Cross multiply
    10,780.74x = 16,171.11 × 4,919.94
  4. Step 4: Simplify right side
    10,780.74x = 79,560,890.93
  5. Step 5: Solve for x
    x = 79,560,890.93/10,780.74
  6. Step 6: Final answer
    x = 7,379.91

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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.