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Finding the Fourth Proportional to 17,142.76, 25,684.76 and 11,509.88

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Solution

The fourth proportional to 17,142.76, 25,684.76 and 11,509.88 is: 17,245.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,142.76 : 25,684.76 = 11,509.88 : x
  2. Step 2: Convert to fraction form
    17,142.76/25,684.76 = 11,509.88/x
  3. Step 3: Cross multiply
    17,142.76x = 25,684.76 × 11,509.88
  4. Step 4: Simplify right side
    17,142.76x = 295,628,505.43
  5. Step 5: Solve for x
    x = 295,628,505.43/17,142.76
  6. Step 6: Final answer
    x = 17,245.09

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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.