Home / 38,083.78-57,128.34-11,785.06

Finding the Fourth Proportional to 38,083.78, 57,128.34 and 11,785.06

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Solution

The fourth proportional to 38,083.78, 57,128.34 and 11,785.06 is: 17,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,083.78 : 57,128.34 = 11,785.06 : x
  2. Step 2: Convert to fraction form
    38,083.78/57,128.34 = 11,785.06/x
  3. Step 3: Cross multiply
    38,083.78x = 57,128.34 × 11,785.06
  4. Step 4: Simplify right side
    38,083.78x = 673,260,914.60
  5. Step 5: Solve for x
    x = 673,260,914.60/38,083.78
  6. Step 6: Final answer
    x = 17,678.42

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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.