Home / 38,879.26-53,658.10-21,889.86

Finding the Fourth Proportional to 38,879.26, 53,658.10 and 21,889.86

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Solution

The fourth proportional to 38,879.26, 53,658.10 and 21,889.86 is: 30,210.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,879.26 : 53,658.10 = 21,889.86 : x
  2. Step 2: Convert to fraction form
    38,879.26/53,658.10 = 21,889.86/x
  3. Step 3: Cross multiply
    38,879.26x = 53,658.10 × 21,889.86
  4. Step 4: Simplify right side
    38,879.26x = 1,174,568,296.87
  5. Step 5: Solve for x
    x = 1,174,568,296.87/38,879.26
  6. Step 6: Final answer
    x = 30,210.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.