Home / 10,928.90-16,394.15-3,137.78

Finding the Fourth Proportional to 10,928.90, 16,394.15 and 3,137.78

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Solution

The fourth proportional to 10,928.90, 16,394.15 and 3,137.78 is: 4,706.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.90 : 16,394.15 = 3,137.78 : x
  2. Step 2: Convert to fraction form
    10,928.90/16,394.15 = 3,137.78/x
  3. Step 3: Cross multiply
    10,928.90x = 16,394.15 × 3,137.78
  4. Step 4: Simplify right side
    10,928.90x = 51,441,235.99
  5. Step 5: Solve for x
    x = 51,441,235.99/10,928.90
  6. Step 6: Final answer
    x = 4,706.90

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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.