Home / 12,391.92-18,584.04-4,182

Finding the Fourth Proportional to 12,391.92, 18,584.04 and 4,182

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Solution

The fourth proportional to 12,391.92, 18,584.04 and 4,182 is: 6,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.92 : 18,584.04 = 4,182 : x
  2. Step 2: Convert to fraction form
    12,391.92/18,584.04 = 4,182/x
  3. Step 3: Cross multiply
    12,391.92x = 18,584.04 × 4,182
  4. Step 4: Simplify right side
    12,391.92x = 77,718,455.28
  5. Step 5: Solve for x
    x = 77,718,455.28/12,391.92
  6. Step 6: Final answer
    x = 6,271.70

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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.