Home / 39,787.58-54,906.88-21,883.80

Finding the Fourth Proportional to 39,787.58, 54,906.88 and 21,883.80

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Solution

The fourth proportional to 39,787.58, 54,906.88 and 21,883.80 is: 30,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,787.58 : 54,906.88 = 21,883.80 : x
  2. Step 2: Convert to fraction form
    39,787.58/54,906.88 = 21,883.80/x
  3. Step 3: Cross multiply
    39,787.58x = 54,906.88 × 21,883.80
  4. Step 4: Simplify right side
    39,787.58x = 1,201,571,180.54
  5. Step 5: Solve for x
    x = 1,201,571,180.54/39,787.58
  6. Step 6: Final answer
    x = 30,199.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.