Home / 38,188.64-57,269.22-13,221.90

Finding the Fourth Proportional to 38,188.64, 57,269.22 and 13,221.90

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Solution

The fourth proportional to 38,188.64, 57,269.22 and 13,221.90 is: 19,828.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,188.64 : 57,269.22 = 13,221.90 : x
  2. Step 2: Convert to fraction form
    38,188.64/57,269.22 = 13,221.90/x
  3. Step 3: Cross multiply
    38,188.64x = 57,269.22 × 13,221.90
  4. Step 4: Simplify right side
    38,188.64x = 757,207,899.92
  5. Step 5: Solve for x
    x = 757,207,899.92/38,188.64
  6. Step 6: Final answer
    x = 19,828.09

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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.