Home / 28,241.78-42,376.60-19,974.92

Finding the Fourth Proportional to 28,241.78, 42,376.60 and 19,974.92

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Solution

The fourth proportional to 28,241.78, 42,376.60 and 19,974.92 is: 29,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,241.78 : 42,376.60 = 19,974.92 : x
  2. Step 2: Convert to fraction form
    28,241.78/42,376.60 = 19,974.92/x
  3. Step 3: Cross multiply
    28,241.78x = 42,376.60 × 19,974.92
  4. Step 4: Simplify right side
    28,241.78x = 846,469,194.87
  5. Step 5: Solve for x
    x = 846,469,194.87/28,241.78
  6. Step 6: Final answer
    x = 29,972.23

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1.5x scale

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.