Home / 18,787.58-25,928.82-11,135.41

Finding the Fourth Proportional to 18,787.58, 25,928.82 and 11,135.41

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Solution

The fourth proportional to 18,787.58, 25,928.82 and 11,135.41 is: 15,368.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.58 : 25,928.82 = 11,135.41 : x
  2. Step 2: Convert to fraction form
    18,787.58/25,928.82 = 11,135.41/x
  3. Step 3: Cross multiply
    18,787.58x = 25,928.82 × 11,135.41
  4. Step 4: Simplify right side
    18,787.58x = 288,728,041.52
  5. Step 5: Solve for x
    x = 288,728,041.52/18,787.58
  6. Step 6: Final answer
    x = 15,368.03

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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.