Home / 12,787.58-19,145.30-6,770.02

Finding the Fourth Proportional to 12,787.58, 19,145.30 and 6,770.02

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Solution

The fourth proportional to 12,787.58, 19,145.30 and 6,770.02 is: 10,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.58 : 19,145.30 = 6,770.02 : x
  2. Step 2: Convert to fraction form
    12,787.58/19,145.30 = 6,770.02/x
  3. Step 3: Cross multiply
    12,787.58x = 19,145.30 × 6,770.02
  4. Step 4: Simplify right side
    12,787.58x = 129,614,063.91
  5. Step 5: Solve for x
    x = 129,614,063.91/12,787.58
  6. Step 6: Final answer
    x = 10,135.93

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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.