Home / 31,960.26-47,940.78-12,240

Finding the Fourth Proportional to 31,960.26, 47,940.78 and 12,240

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Solution

The fourth proportional to 31,960.26, 47,940.78 and 12,240 is: 18,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,960.26 : 47,940.78 = 12,240 : x
  2. Step 2: Convert to fraction form
    31,960.26/47,940.78 = 12,240/x
  3. Step 3: Cross multiply
    31,960.26x = 47,940.78 × 12,240
  4. Step 4: Simplify right side
    31,960.26x = 586,795,147.20
  5. Step 5: Solve for x
    x = 586,795,147.20/31,960.26
  6. Step 6: Final answer
    x = 18,360.15

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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.