Home / 38,531.20-57,796.80-19,785.10

Finding the Fourth Proportional to 38,531.20, 57,796.80 and 19,785.10

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Solution

The fourth proportional to 38,531.20, 57,796.80 and 19,785.10 is: 29,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,531.20 : 57,796.80 = 19,785.10 : x
  2. Step 2: Convert to fraction form
    38,531.20/57,796.80 = 19,785.10/x
  3. Step 3: Cross multiply
    38,531.20x = 57,796.80 × 19,785.10
  4. Step 4: Simplify right side
    38,531.20x = 1,143,515,467.68
  5. Step 5: Solve for x
    x = 1,143,515,467.68/38,531.20
  6. Step 6: Final answer
    x = 29,677.65

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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.