Home / 9,086.40-13,629.60-7,992.90

Finding the Fourth Proportional to 9,086.40, 13,629.60 and 7,992.90

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Solution

The fourth proportional to 9,086.40, 13,629.60 and 7,992.90 is: 11,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,086.40 : 13,629.60 = 7,992.90 : x
  2. Step 2: Convert to fraction form
    9,086.40/13,629.60 = 7,992.90/x
  3. Step 3: Cross multiply
    9,086.40x = 13,629.60 × 7,992.90
  4. Step 4: Simplify right side
    9,086.40x = 108,940,029.84
  5. Step 5: Solve for x
    x = 108,940,029.84/9,086.40
  6. Step 6: Final answer
    x = 11,989.35

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Similar ratio
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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.