Home / 13,738.71-20,611.93-3,878.07

Finding the Fourth Proportional to 13,738.71, 20,611.93 and 3,878.07

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Solution

The fourth proportional to 13,738.71, 20,611.93 and 3,878.07 is: 5,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.71 : 20,611.93 = 3,878.07 : x
  2. Step 2: Convert to fraction form
    13,738.71/20,611.93 = 3,878.07/x
  3. Step 3: Cross multiply
    13,738.71x = 20,611.93 × 3,878.07
  4. Step 4: Simplify right side
    13,738.71x = 79,934,497.68
  5. Step 5: Solve for x
    x = 79,934,497.68/13,738.71
  6. Step 6: Final answer
    x = 5,818.20

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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.