Home / 12,787.75-19,181.67-3,553.75

Finding the Fourth Proportional to 12,787.75, 19,181.67 and 3,553.75

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Solution

The fourth proportional to 12,787.75, 19,181.67 and 3,553.75 is: 5,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.75 : 19,181.67 = 3,553.75 : x
  2. Step 2: Convert to fraction form
    12,787.75/19,181.67 = 3,553.75/x
  3. Step 3: Cross multiply
    12,787.75x = 19,181.67 × 3,553.75
  4. Step 4: Simplify right side
    12,787.75x = 68,166,859.76
  5. Step 5: Solve for x
    x = 68,166,859.76/12,787.75
  6. Step 6: Final answer
    x = 5,330.64

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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.