Home / 11,121.40-16,659.70-6,948.60

Finding the Fourth Proportional to 11,121.40, 16,659.70 and 6,948.60

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Solution

The fourth proportional to 11,121.40, 16,659.70 and 6,948.60 is: 10,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.40 : 16,659.70 = 6,948.60 : x
  2. Step 2: Convert to fraction form
    11,121.40/16,659.70 = 6,948.60/x
  3. Step 3: Cross multiply
    11,121.40x = 16,659.70 × 6,948.60
  4. Step 4: Simplify right side
    11,121.40x = 115,761,591.42
  5. Step 5: Solve for x
    x = 115,761,591.42/11,121.40
  6. Step 6: Final answer
    x = 10,408.90

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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.