Home / 12,694.36-19,044.58-3,929.28

Finding the Fourth Proportional to 12,694.36, 19,044.58 and 3,929.28

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Solution

The fourth proportional to 12,694.36, 19,044.58 and 3,929.28 is: 5,894.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,694.36 : 19,044.58 = 3,929.28 : x
  2. Step 2: Convert to fraction form
    12,694.36/19,044.58 = 3,929.28/x
  3. Step 3: Cross multiply
    12,694.36x = 19,044.58 × 3,929.28
  4. Step 4: Simplify right side
    12,694.36x = 74,831,487.30
  5. Step 5: Solve for x
    x = 74,831,487.30/12,694.36
  6. Step 6: Final answer
    x = 5,894.86

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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.