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Finding the Fourth Proportional to 11,410.40, 17,115.60 and 11,313.20

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Solution

The fourth proportional to 11,410.40, 17,115.60 and 11,313.20 is: 16,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,410.40 : 17,115.60 = 11,313.20 : x
  2. Step 2: Convert to fraction form
    11,410.40/17,115.60 = 11,313.20/x
  3. Step 3: Cross multiply
    11,410.40x = 17,115.60 × 11,313.20
  4. Step 4: Simplify right side
    11,410.40x = 193,632,205.92
  5. Step 5: Solve for x
    x = 193,632,205.92/11,410.40
  6. Step 6: Final answer
    x = 16,969.80

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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.