Home / 20,631.78-30,962.52-15,963.48

Finding the Fourth Proportional to 20,631.78, 30,962.52 and 15,963.48

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Solution

The fourth proportional to 20,631.78, 30,962.52 and 15,963.48 is: 23,956.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.78 : 30,962.52 = 15,963.48 : x
  2. Step 2: Convert to fraction form
    20,631.78/30,962.52 = 15,963.48/x
  3. Step 3: Cross multiply
    20,631.78x = 30,962.52 × 15,963.48
  4. Step 4: Simplify right side
    20,631.78x = 494,269,568.77
  5. Step 5: Solve for x
    x = 494,269,568.77/20,631.78
  6. Step 6: Final answer
    x = 23,956.71

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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.