Home / 11,138.40-16,675.20-6,753.60

Finding the Fourth Proportional to 11,138.40, 16,675.20 and 6,753.60

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Solution

The fourth proportional to 11,138.40, 16,675.20 and 6,753.60 is: 10,110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.40 : 16,675.20 = 6,753.60 : x
  2. Step 2: Convert to fraction form
    11,138.40/16,675.20 = 6,753.60/x
  3. Step 3: Cross multiply
    11,138.40x = 16,675.20 × 6,753.60
  4. Step 4: Simplify right side
    11,138.40x = 112,617,630.72
  5. Step 5: Solve for x
    x = 112,617,630.72/11,138.40
  6. Step 6: Final answer
    x = 10,110.75

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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.