Home / 12,936.78-19,395.30-5,911.92

Finding the Fourth Proportional to 12,936.78, 19,395.30 and 5,911.92

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Solution

The fourth proportional to 12,936.78, 19,395.30 and 5,911.92 is: 8,863.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.78 : 19,395.30 = 5,911.92 : x
  2. Step 2: Convert to fraction form
    12,936.78/19,395.30 = 5,911.92/x
  3. Step 3: Cross multiply
    12,936.78x = 19,395.30 × 5,911.92
  4. Step 4: Simplify right side
    12,936.78x = 114,663,461.98
  5. Step 5: Solve for x
    x = 114,663,461.98/12,936.78
  6. Step 6: Final answer
    x = 8,863.37

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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.