Home / 12,940.36-19,410.55-5,540.03

Finding the Fourth Proportional to 12,940.36, 19,410.55 and 5,540.03

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Solution

The fourth proportional to 12,940.36, 19,410.55 and 5,540.03 is: 8,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.36 : 19,410.55 = 5,540.03 : x
  2. Step 2: Convert to fraction form
    12,940.36/19,410.55 = 5,540.03/x
  3. Step 3: Cross multiply
    12,940.36x = 19,410.55 × 5,540.03
  4. Step 4: Simplify right side
    12,940.36x = 107,535,029.32
  5. Step 5: Solve for x
    x = 107,535,029.32/12,940.36
  6. Step 6: Final answer
    x = 8,310.05

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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.