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Finding the Fourth Proportional to 17,185.42, 25,772.36 and 7,691.79

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Solution

The fourth proportional to 17,185.42, 25,772.36 and 7,691.79 is: 11,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,185.42 : 25,772.36 = 7,691.79 : x
  2. Step 2: Convert to fraction form
    17,185.42/25,772.36 = 7,691.79/x
  3. Step 3: Cross multiply
    17,185.42x = 25,772.36 × 7,691.79
  4. Step 4: Simplify right side
    17,185.42x = 198,235,580.92
  5. Step 5: Solve for x
    x = 198,235,580.92/17,185.42
  6. Step 6: Final answer
    x = 11,535.10

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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.