Home / 12,787.62-19,176.39-6,211.86

Finding the Fourth Proportional to 12,787.62, 19,176.39 and 6,211.86

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Solution

The fourth proportional to 12,787.62, 19,176.39 and 6,211.86 is: 9,315.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.62 : 19,176.39 = 6,211.86 : x
  2. Step 2: Convert to fraction form
    12,787.62/19,176.39 = 6,211.86/x
  3. Step 3: Cross multiply
    12,787.62x = 19,176.39 × 6,211.86
  4. Step 4: Simplify right side
    12,787.62x = 119,121,049.99
  5. Step 5: Solve for x
    x = 119,121,049.99/12,787.62
  6. Step 6: Final answer
    x = 9,315.34

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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.