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Finding the Fourth Proportional to 17,969.56, 26,942.72 and 8,609.36

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Solution

The fourth proportional to 17,969.56, 26,942.72 and 8,609.36 is: 12,908.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,969.56 : 26,942.72 = 8,609.36 : x
  2. Step 2: Convert to fraction form
    17,969.56/26,942.72 = 8,609.36/x
  3. Step 3: Cross multiply
    17,969.56x = 26,942.72 × 8,609.36
  4. Step 4: Simplify right side
    17,969.56x = 231,959,575.86
  5. Step 5: Solve for x
    x = 231,959,575.86/17,969.56
  6. Step 6: Final answer
    x = 12,908.47

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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.