Home / 31,878.75-47,797.62-12,146.54

Finding the Fourth Proportional to 31,878.75, 47,797.62 and 12,146.54

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Solution

The fourth proportional to 31,878.75, 47,797.62 and 12,146.54 is: 18,211.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.75 : 47,797.62 = 12,146.54 : x
  2. Step 2: Convert to fraction form
    31,878.75/47,797.62 = 12,146.54/x
  3. Step 3: Cross multiply
    31,878.75x = 47,797.62 × 12,146.54
  4. Step 4: Simplify right side
    31,878.75x = 580,575,464.25
  5. Step 5: Solve for x
    x = 580,575,464.25/31,878.75
  6. Step 6: Final answer
    x = 18,211.99

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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.