Home / 12,479.14-18,721.78-3,714

Finding the Fourth Proportional to 12,479.14, 18,721.78 and 3,714

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Solution

The fourth proportional to 12,479.14, 18,721.78 and 3,714 is: 5,571.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.14 : 18,721.78 = 3,714 : x
  2. Step 2: Convert to fraction form
    12,479.14/18,721.78 = 3,714/x
  3. Step 3: Cross multiply
    12,479.14x = 18,721.78 × 3,714
  4. Step 4: Simplify right side
    12,479.14x = 69,532,690.92
  5. Step 5: Solve for x
    x = 69,532,690.92/12,479.14
  6. Step 6: Final answer
    x = 5,571.91

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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.