Home / 38,430.14-57,645.30-12,135.20

Finding the Fourth Proportional to 38,430.14, 57,645.30 and 12,135.20

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Solution

The fourth proportional to 38,430.14, 57,645.30 and 12,135.20 is: 18,202.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,430.14 : 57,645.30 = 12,135.20 : x
  2. Step 2: Convert to fraction form
    38,430.14/57,645.30 = 12,135.20/x
  3. Step 3: Cross multiply
    38,430.14x = 57,645.30 × 12,135.20
  4. Step 4: Simplify right side
    38,430.14x = 699,537,244.56
  5. Step 5: Solve for x
    x = 699,537,244.56/38,430.14
  6. Step 6: Final answer
    x = 18,202.83

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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.