Home / 10,780.20-16,170.98-3,384.95

Finding the Fourth Proportional to 10,780.20, 16,170.98 and 3,384.95

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Solution

The fourth proportional to 10,780.20, 16,170.98 and 3,384.95 is: 5,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.20 : 16,170.98 = 3,384.95 : x
  2. Step 2: Convert to fraction form
    10,780.20/16,170.98 = 3,384.95/x
  3. Step 3: Cross multiply
    10,780.20x = 16,170.98 × 3,384.95
  4. Step 4: Simplify right side
    10,780.20x = 54,737,958.75
  5. Step 5: Solve for x
    x = 54,737,958.75/10,780.20
  6. Step 6: Final answer
    x = 5,077.64

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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.