Home / 30,201.38-45,301.71-21,279.86

Finding the Fourth Proportional to 30,201.38, 45,301.71 and 21,279.86

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Solution

The fourth proportional to 30,201.38, 45,301.71 and 21,279.86 is: 31,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,201.38 : 45,301.71 = 21,279.86 : x
  2. Step 2: Convert to fraction form
    30,201.38/45,301.71 = 21,279.86/x
  3. Step 3: Cross multiply
    30,201.38x = 45,301.71 × 21,279.86
  4. Step 4: Simplify right side
    30,201.38x = 964,014,046.56
  5. Step 5: Solve for x
    x = 964,014,046.56/30,201.38
  6. Step 6: Final answer
    x = 31,919.54

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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.