Home / 12,787.96-19,181.94-4,891.28

Finding the Fourth Proportional to 12,787.96, 19,181.94 and 4,891.28

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Solution

The fourth proportional to 12,787.96, 19,181.94 and 4,891.28 is: 7,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.96 : 19,181.94 = 4,891.28 : x
  2. Step 2: Convert to fraction form
    12,787.96/19,181.94 = 4,891.28/x
  3. Step 3: Cross multiply
    12,787.96x = 19,181.94 × 4,891.28
  4. Step 4: Simplify right side
    12,787.96x = 93,824,239.48
  5. Step 5: Solve for x
    x = 93,824,239.48/12,787.96
  6. Step 6: Final answer
    x = 7,336.92

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Similar ratio
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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.