Home / 12,787.79-19,179.86-4,022.47

Finding the Fourth Proportional to 12,787.79, 19,179.86 and 4,022.47

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Solution

The fourth proportional to 12,787.79, 19,179.86 and 4,022.47 is: 6,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.79 : 19,179.86 = 4,022.47 : x
  2. Step 2: Convert to fraction form
    12,787.79/19,179.86 = 4,022.47/x
  3. Step 3: Cross multiply
    12,787.79x = 19,179.86 × 4,022.47
  4. Step 4: Simplify right side
    12,787.79x = 77,150,415.32
  5. Step 5: Solve for x
    x = 77,150,415.32/12,787.79
  6. Step 6: Final answer
    x = 6,033.13

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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.