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Finding the Fourth Proportional to 17,123.85, 25,685.42 and 7,889.85

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Solution

The fourth proportional to 17,123.85, 25,685.42 and 7,889.85 is: 11,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,123.85 : 25,685.42 = 7,889.85 : x
  2. Step 2: Convert to fraction form
    17,123.85/25,685.42 = 7,889.85/x
  3. Step 3: Cross multiply
    17,123.85x = 25,685.42 × 7,889.85
  4. Step 4: Simplify right side
    17,123.85x = 202,654,071.54
  5. Step 5: Solve for x
    x = 202,654,071.54/17,123.85
  6. Step 6: Final answer
    x = 11,834.61

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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.