Home / 36,138.03-54,193.56-12,438.87

Finding the Fourth Proportional to 36,138.03, 54,193.56 and 12,438.87

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Solution

The fourth proportional to 36,138.03, 54,193.56 and 12,438.87 is: 18,653.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.03 : 54,193.56 = 12,438.87 : x
  2. Step 2: Convert to fraction form
    36,138.03/54,193.56 = 12,438.87/x
  3. Step 3: Cross multiply
    36,138.03x = 54,193.56 × 12,438.87
  4. Step 4: Simplify right side
    36,138.03x = 674,106,647.68
  5. Step 5: Solve for x
    x = 674,106,647.68/36,138.03
  6. Step 6: Final answer
    x = 18,653.66

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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.