Home / 31,944.78-47,920.50-12,240

Finding the Fourth Proportional to 31,944.78, 47,920.50 and 12,240

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Solution

The fourth proportional to 31,944.78, 47,920.50 and 12,240 is: 18,361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,944.78 : 47,920.50 = 12,240 : x
  2. Step 2: Convert to fraction form
    31,944.78/47,920.50 = 12,240/x
  3. Step 3: Cross multiply
    31,944.78x = 47,920.50 × 12,240
  4. Step 4: Simplify right side
    31,944.78x = 586,546,920
  5. Step 5: Solve for x
    x = 586,546,920/31,944.78
  6. Step 6: Final answer
    x = 18,361.28

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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.