Home / 12,687.36-19,029.67-3,328.31

Finding the Fourth Proportional to 12,687.36, 19,029.67 and 3,328.31

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Solution

The fourth proportional to 12,687.36, 19,029.67 and 3,328.31 is: 4,992.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.36 : 19,029.67 = 3,328.31 : x
  2. Step 2: Convert to fraction form
    12,687.36/19,029.67 = 3,328.31/x
  3. Step 3: Cross multiply
    12,687.36x = 19,029.67 × 3,328.31
  4. Step 4: Simplify right side
    12,687.36x = 63,336,678.13
  5. Step 5: Solve for x
    x = 63,336,678.13/12,687.36
  6. Step 6: Final answer
    x = 4,992.11

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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.