Home / 11,280.63-16,920.78-3,489.44

Finding the Fourth Proportional to 11,280.63, 16,920.78 and 3,489.44

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Solution

The fourth proportional to 11,280.63, 16,920.78 and 3,489.44 is: 5,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.63 : 16,920.78 = 3,489.44 : x
  2. Step 2: Convert to fraction form
    11,280.63/16,920.78 = 3,489.44/x
  3. Step 3: Cross multiply
    11,280.63x = 16,920.78 × 3,489.44
  4. Step 4: Simplify right side
    11,280.63x = 59,043,961.96
  5. Step 5: Solve for x
    x = 59,043,961.96/11,280.63
  6. Step 6: Final answer
    x = 5,234.10

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1.5x scale

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.