Home / 11,286.60-16,917.90-5,439.40

Finding the Fourth Proportional to 11,286.60, 16,917.90 and 5,439.40

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Solution

The fourth proportional to 11,286.60, 16,917.90 and 5,439.40 is: 8,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,286.60 : 16,917.90 = 5,439.40 : x
  2. Step 2: Convert to fraction form
    11,286.60/16,917.90 = 5,439.40/x
  3. Step 3: Cross multiply
    11,286.60x = 16,917.90 × 5,439.40
  4. Step 4: Simplify right side
    11,286.60x = 92,023,225.26
  5. Step 5: Solve for x
    x = 92,023,225.26/11,286.60
  6. Step 6: Final answer
    x = 8,153.32

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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.