Home / 12,239.78-18,360.36-3,474

Finding the Fourth Proportional to 12,239.78, 18,360.36 and 3,474

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Solution

The fourth proportional to 12,239.78, 18,360.36 and 3,474 is: 5,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.78 : 18,360.36 = 3,474 : x
  2. Step 2: Convert to fraction form
    12,239.78/18,360.36 = 3,474/x
  3. Step 3: Cross multiply
    12,239.78x = 18,360.36 × 3,474
  4. Step 4: Simplify right side
    12,239.78x = 63,783,890.64
  5. Step 5: Solve for x
    x = 63,783,890.64/12,239.78
  6. Step 6: Final answer
    x = 5,211.20

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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.