Home / 12,911.45-19,362.51-5,516.42

Finding the Fourth Proportional to 12,911.45, 19,362.51 and 5,516.42

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Solution

The fourth proportional to 12,911.45, 19,362.51 and 5,516.42 is: 8,272.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.45 : 19,362.51 = 5,516.42 : x
  2. Step 2: Convert to fraction form
    12,911.45/19,362.51 = 5,516.42/x
  3. Step 3: Cross multiply
    12,911.45x = 19,362.51 × 5,516.42
  4. Step 4: Simplify right side
    12,911.45x = 106,811,640.60
  5. Step 5: Solve for x
    x = 106,811,640.60/12,911.45
  6. Step 6: Final answer
    x = 8,272.63

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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.