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Finding the Fourth Proportional to 11,086.40, 16,629.60 and 8,494.40

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Solution

The fourth proportional to 11,086.40, 16,629.60 and 8,494.40 is: 12,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,086.40 : 16,629.60 = 8,494.40 : x
  2. Step 2: Convert to fraction form
    11,086.40/16,629.60 = 8,494.40/x
  3. Step 3: Cross multiply
    11,086.40x = 16,629.60 × 8,494.40
  4. Step 4: Simplify right side
    11,086.40x = 141,258,474.24
  5. Step 5: Solve for x
    x = 141,258,474.24/11,086.40
  6. Step 6: Final answer
    x = 12,741.60

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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.