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Finding the Fourth Proportional to 11,287.40, 16,912.62 and 10,855.40

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Solution

The fourth proportional to 11,287.40, 16,912.62 and 10,855.40 is: 16,265.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.40 : 16,912.62 = 10,855.40 : x
  2. Step 2: Convert to fraction form
    11,287.40/16,912.62 = 10,855.40/x
  3. Step 3: Cross multiply
    11,287.40x = 16,912.62 × 10,855.40
  4. Step 4: Simplify right side
    11,287.40x = 183,593,255.15
  5. Step 5: Solve for x
    x = 183,593,255.15/11,287.40
  6. Step 6: Final answer
    x = 16,265.33

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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.