Home / 31,863.84-47,767.81-12,129.27

Finding the Fourth Proportional to 31,863.84, 47,767.81 and 12,129.27

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Solution

The fourth proportional to 31,863.84, 47,767.81 and 12,129.27 is: 18,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,863.84 : 47,767.81 = 12,129.27 : x
  2. Step 2: Convert to fraction form
    31,863.84/47,767.81 = 12,129.27/x
  3. Step 3: Cross multiply
    31,863.84x = 47,767.81 × 12,129.27
  4. Step 4: Simplify right side
    31,863.84x = 579,388,664.80
  5. Step 5: Solve for x
    x = 579,388,664.80/31,863.84
  6. Step 6: Final answer
    x = 18,183.27

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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.