Home / 10,780.97-16,161.86-4,205.66

Finding the Fourth Proportional to 10,780.97, 16,161.86 and 4,205.66

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Solution

The fourth proportional to 10,780.97, 16,161.86 and 4,205.66 is: 6,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.97 : 16,161.86 = 4,205.66 : x
  2. Step 2: Convert to fraction form
    10,780.97/16,161.86 = 4,205.66/x
  3. Step 3: Cross multiply
    10,780.97x = 16,161.86 × 4,205.66
  4. Step 4: Simplify right side
    10,780.97x = 67,971,217.83
  5. Step 5: Solve for x
    x = 67,971,217.83/10,780.97
  6. Step 6: Final answer
    x = 6,304.74

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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.