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Finding the Fourth Proportional to 38,009.70, 57,009.15 and 11,717.10

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Solution

The fourth proportional to 38,009.70, 57,009.15 and 11,717.10 is: 17,573.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,009.70 : 57,009.15 = 11,717.10 : x
  2. Step 2: Convert to fraction form
    38,009.70/57,009.15 = 11,717.10/x
  3. Step 3: Cross multiply
    38,009.70x = 57,009.15 × 11,717.10
  4. Step 4: Simplify right side
    38,009.70x = 667,981,911.47
  5. Step 5: Solve for x
    x = 667,981,911.47/38,009.70
  6. Step 6: Final answer
    x = 17,573.99

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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.