Home / 12,579.99-18,872.26-5,180.41

Finding the Fourth Proportional to 12,579.99, 18,872.26 and 5,180.41

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Solution

The fourth proportional to 12,579.99, 18,872.26 and 5,180.41 is: 7,771.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.99 : 18,872.26 = 5,180.41 : x
  2. Step 2: Convert to fraction form
    12,579.99/18,872.26 = 5,180.41/x
  3. Step 3: Cross multiply
    12,579.99x = 18,872.26 × 5,180.41
  4. Step 4: Simplify right side
    12,579.99x = 97,766,055.07
  5. Step 5: Solve for x
    x = 97,766,055.07/12,579.99
  6. Step 6: Final answer
    x = 7,771.56

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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.