Home / 12,911.70-19,375.75-5,516.22

Finding the Fourth Proportional to 12,911.70, 19,375.75 and 5,516.22

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Solution

The fourth proportional to 12,911.70, 19,375.75 and 5,516.22 is: 8,277.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.70 : 19,375.75 = 5,516.22 : x
  2. Step 2: Convert to fraction form
    12,911.70/19,375.75 = 5,516.22/x
  3. Step 3: Cross multiply
    12,911.70x = 19,375.75 × 5,516.22
  4. Step 4: Simplify right side
    12,911.70x = 106,880,837.44
  5. Step 5: Solve for x
    x = 106,880,837.44/12,911.70
  6. Step 6: Final answer
    x = 8,277.83

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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.