Home / 11,115.80-16,649.40-6,725.60

Finding the Fourth Proportional to 11,115.80, 16,649.40 and 6,725.60

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Solution

The fourth proportional to 11,115.80, 16,649.40 and 6,725.60 is: 10,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.80 : 16,649.40 = 6,725.60 : x
  2. Step 2: Convert to fraction form
    11,115.80/16,649.40 = 6,725.60/x
  3. Step 3: Cross multiply
    11,115.80x = 16,649.40 × 6,725.60
  4. Step 4: Simplify right side
    11,115.80x = 111,977,204.64
  5. Step 5: Solve for x
    x = 111,977,204.64/11,115.80
  6. Step 6: Final answer
    x = 10,073.70

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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.