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Finding the Fourth Proportional to 38,480.73, 57,640.08 and 19,703.70

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Solution

The fourth proportional to 38,480.73, 57,640.08 and 19,703.70 is: 29,514.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.73 : 57,640.08 = 19,703.70 : x
  2. Step 2: Convert to fraction form
    38,480.73/57,640.08 = 19,703.70/x
  3. Step 3: Cross multiply
    38,480.73x = 57,640.08 × 19,703.70
  4. Step 4: Simplify right side
    38,480.73x = 1,135,722,844.30
  5. Step 5: Solve for x
    x = 1,135,722,844.30/38,480.73
  6. Step 6: Final answer
    x = 29,514.07

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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.