Home / 36,126.75-54,176.07-12,429.79

Finding the Fourth Proportional to 36,126.75, 54,176.07 and 12,429.79

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Solution

The fourth proportional to 36,126.75, 54,176.07 and 12,429.79 is: 18,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,126.75 : 54,176.07 = 12,429.79 : x
  2. Step 2: Convert to fraction form
    36,126.75/54,176.07 = 12,429.79/x
  3. Step 3: Cross multiply
    36,126.75x = 54,176.07 × 12,429.79
  4. Step 4: Simplify right side
    36,126.75x = 673,397,173.13
  5. Step 5: Solve for x
    x = 673,397,173.13/36,126.75
  6. Step 6: Final answer
    x = 18,639.85

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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.