Home / 11,149.58-15,396.84-7,177.60

Finding the Fourth Proportional to 11,149.58, 15,396.84 and 7,177.60

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Solution

The fourth proportional to 11,149.58, 15,396.84 and 7,177.60 is: 9,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.58 : 15,396.84 = 7,177.60 : x
  2. Step 2: Convert to fraction form
    11,149.58/15,396.84 = 7,177.60/x
  3. Step 3: Cross multiply
    11,149.58x = 15,396.84 × 7,177.60
  4. Step 4: Simplify right side
    11,149.58x = 110,512,358.78
  5. Step 5: Solve for x
    x = 110,512,358.78/11,149.58
  6. Step 6: Final answer
    x = 9,911.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.