Home / 13,940.78-19,229.83-8,271.80

Finding the Fourth Proportional to 13,940.78, 19,229.83 and 8,271.80

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Solution

The fourth proportional to 13,940.78, 19,229.83 and 8,271.80 is: 11,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.78 : 19,229.83 = 8,271.80 : x
  2. Step 2: Convert to fraction form
    13,940.78/19,229.83 = 8,271.80/x
  3. Step 3: Cross multiply
    13,940.78x = 19,229.83 × 8,271.80
  4. Step 4: Simplify right side
    13,940.78x = 159,065,190.97
  5. Step 5: Solve for x
    x = 159,065,190.97/13,940.78
  6. Step 6: Final answer
    x = 11,410.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.