Home / 12,695.36-19,046.08-3,930.28

Finding the Fourth Proportional to 12,695.36, 19,046.08 and 3,930.28

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Solution

The fourth proportional to 12,695.36, 19,046.08 and 3,930.28 is: 5,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.36 : 19,046.08 = 3,930.28 : x
  2. Step 2: Convert to fraction form
    12,695.36/19,046.08 = 3,930.28/x
  3. Step 3: Cross multiply
    12,695.36x = 19,046.08 × 3,930.28
  4. Step 4: Simplify right side
    12,695.36x = 74,856,427.30
  5. Step 5: Solve for x
    x = 74,856,427.30/12,695.36
  6. Step 6: Final answer
    x = 5,896.36

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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.