Home / 28,787.74-43,145.31-15,427.60

Finding the Fourth Proportional to 28,787.74, 43,145.31 and 15,427.60

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Solution

The fourth proportional to 28,787.74, 43,145.31 and 15,427.60 is: 23,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.74 : 43,145.31 = 15,427.60 : x
  2. Step 2: Convert to fraction form
    28,787.74/43,145.31 = 15,427.60/x
  3. Step 3: Cross multiply
    28,787.74x = 43,145.31 × 15,427.60
  4. Step 4: Simplify right side
    28,787.74x = 665,628,584.56
  5. Step 5: Solve for x
    x = 665,628,584.56/28,787.74
  6. Step 6: Final answer
    x = 23,121.95

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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.