Home / 12,731.64-19,076.94-6,891

Finding the Fourth Proportional to 12,731.64, 19,076.94 and 6,891

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Solution

The fourth proportional to 12,731.64, 19,076.94 and 6,891 is: 10,325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.64 : 19,076.94 = 6,891 : x
  2. Step 2: Convert to fraction form
    12,731.64/19,076.94 = 6,891/x
  3. Step 3: Cross multiply
    12,731.64x = 19,076.94 × 6,891
  4. Step 4: Simplify right side
    12,731.64x = 131,459,193.54
  5. Step 5: Solve for x
    x = 131,459,193.54/12,731.64
  6. Step 6: Final answer
    x = 10,325.39

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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.