Home / 19,198.81-28,787.37-7,947.79

Finding the Fourth Proportional to 19,198.81, 28,787.37 and 7,947.79

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Solution

The fourth proportional to 19,198.81, 28,787.37 and 7,947.79 is: 11,917.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.81 : 28,787.37 = 7,947.79 : x
  2. Step 2: Convert to fraction form
    19,198.81/28,787.37 = 7,947.79/x
  3. Step 3: Cross multiply
    19,198.81x = 28,787.37 × 7,947.79
  4. Step 4: Simplify right side
    19,198.81x = 228,795,869.64
  5. Step 5: Solve for x
    x = 228,795,869.64/19,198.81
  6. Step 6: Final answer
    x = 11,917.19

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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.