Home / 12,998.78-19,491.18-4,112.48

Finding the Fourth Proportional to 12,998.78, 19,491.18 and 4,112.48

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Solution

The fourth proportional to 12,998.78, 19,491.18 and 4,112.48 is: 6,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.78 : 19,491.18 = 4,112.48 : x
  2. Step 2: Convert to fraction form
    12,998.78/19,491.18 = 4,112.48/x
  3. Step 3: Cross multiply
    12,998.78x = 19,491.18 × 4,112.48
  4. Step 4: Simplify right side
    12,998.78x = 80,157,087.93
  5. Step 5: Solve for x
    x = 80,157,087.93/12,998.78
  6. Step 6: Final answer
    x = 6,166.51

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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.