Home / 12,787.25-19,181.12-3,553.49

Finding the Fourth Proportional to 12,787.25, 19,181.12 and 3,553.49

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Solution

The fourth proportional to 12,787.25, 19,181.12 and 3,553.49 is: 5,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.25 : 19,181.12 = 3,553.49 : x
  2. Step 2: Convert to fraction form
    12,787.25/19,181.12 = 3,553.49/x
  3. Step 3: Cross multiply
    12,787.25x = 19,181.12 × 3,553.49
  4. Step 4: Simplify right side
    12,787.25x = 68,159,918.11
  5. Step 5: Solve for x
    x = 68,159,918.11/12,787.25
  6. Step 6: Final answer
    x = 5,330.30

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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.