Home / 12,787.27-19,181.11-3,902.79

Finding the Fourth Proportional to 12,787.27, 19,181.11 and 3,902.79

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Solution

The fourth proportional to 12,787.27, 19,181.11 and 3,902.79 is: 5,854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.27 : 19,181.11 = 3,902.79 : x
  2. Step 2: Convert to fraction form
    12,787.27/19,181.11 = 3,902.79/x
  3. Step 3: Cross multiply
    12,787.27x = 19,181.11 × 3,902.79
  4. Step 4: Simplify right side
    12,787.27x = 74,859,844.30
  5. Step 5: Solve for x
    x = 74,859,844.30/12,787.27
  6. Step 6: Final answer
    x = 5,854.25

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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.