Home / 12,911.92-19,376.07-5,516.43

Finding the Fourth Proportional to 12,911.92, 19,376.07 and 5,516.43

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Solution

The fourth proportional to 12,911.92, 19,376.07 and 5,516.43 is: 8,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.92 : 19,376.07 = 5,516.43 : x
  2. Step 2: Convert to fraction form
    12,911.92/19,376.07 = 5,516.43/x
  3. Step 3: Cross multiply
    12,911.92x = 19,376.07 × 5,516.43
  4. Step 4: Simplify right side
    12,911.92x = 106,886,733.83
  5. Step 5: Solve for x
    x = 106,886,733.83/12,911.92
  6. Step 6: Final answer
    x = 8,278.14

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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.