Home / 38,188.55-57,269.16-13,221.90

Finding the Fourth Proportional to 38,188.55, 57,269.16 and 13,221.90

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Solution

The fourth proportional to 38,188.55, 57,269.16 and 13,221.90 is: 19,828.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,188.55 : 57,269.16 = 13,221.90 : x
  2. Step 2: Convert to fraction form
    38,188.55/57,269.16 = 13,221.90/x
  3. Step 3: Cross multiply
    38,188.55x = 57,269.16 × 13,221.90
  4. Step 4: Simplify right side
    38,188.55x = 757,207,106.60
  5. Step 5: Solve for x
    x = 757,207,106.60/38,188.55
  6. Step 6: Final answer
    x = 19,828.12

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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.