Home / 34,286.90-51,431.36-12,115.58

Finding the Fourth Proportional to 34,286.90, 51,431.36 and 12,115.58

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Solution

The fourth proportional to 34,286.90, 51,431.36 and 12,115.58 is: 18,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,286.90 : 51,431.36 = 12,115.58 : x
  2. Step 2: Convert to fraction form
    34,286.90/51,431.36 = 12,115.58/x
  3. Step 3: Cross multiply
    34,286.90x = 51,431.36 × 12,115.58
  4. Step 4: Simplify right side
    34,286.90x = 623,120,438.85
  5. Step 5: Solve for x
    x = 623,120,438.85/34,286.90
  6. Step 6: Final answer
    x = 18,173.72

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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.