Home / 12,889.20-19,324.34-4,119.06

Finding the Fourth Proportional to 12,889.20, 19,324.34 and 4,119.06

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Solution

The fourth proportional to 12,889.20, 19,324.34 and 4,119.06 is: 6,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.20 : 19,324.34 = 4,119.06 : x
  2. Step 2: Convert to fraction form
    12,889.20/19,324.34 = 4,119.06/x
  3. Step 3: Cross multiply
    12,889.20x = 19,324.34 × 4,119.06
  4. Step 4: Simplify right side
    12,889.20x = 79,598,115.92
  5. Step 5: Solve for x
    x = 79,598,115.92/12,889.20
  6. Step 6: Final answer
    x = 6,175.57

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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.