Home / 36,138.40-54,209.12-12,764.96

Finding the Fourth Proportional to 36,138.40, 54,209.12 and 12,764.96

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Solution

The fourth proportional to 36,138.40, 54,209.12 and 12,764.96 is: 19,147.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.40 : 54,209.12 = 12,764.96 : x
  2. Step 2: Convert to fraction form
    36,138.40/54,209.12 = 12,764.96/x
  3. Step 3: Cross multiply
    36,138.40x = 54,209.12 × 12,764.96
  4. Step 4: Simplify right side
    36,138.40x = 691,977,248.44
  5. Step 5: Solve for x
    x = 691,977,248.44/36,138.40
  6. Step 6: Final answer
    x = 19,147.98

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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.