Home / 12,910.32-19,368-4,144.56

Finding the Fourth Proportional to 12,910.32, 19,368 and 4,144.56

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Solution

The fourth proportional to 12,910.32, 19,368 and 4,144.56 is: 6,217.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.32 : 19,368 = 4,144.56 : x
  2. Step 2: Convert to fraction form
    12,910.32/19,368 = 4,144.56/x
  3. Step 3: Cross multiply
    12,910.32x = 19,368 × 4,144.56
  4. Step 4: Simplify right side
    12,910.32x = 80,271,838.08
  5. Step 5: Solve for x
    x = 80,271,838.08/12,910.32
  6. Step 6: Final answer
    x = 6,217.65

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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.