Home / 20,896.06-31,371.88-12,137.26

Finding the Fourth Proportional to 20,896.06, 31,371.88 and 12,137.26

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Solution

The fourth proportional to 20,896.06, 31,371.88 and 12,137.26 is: 18,222.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.06 : 31,371.88 = 12,137.26 : x
  2. Step 2: Convert to fraction form
    20,896.06/31,371.88 = 12,137.26/x
  3. Step 3: Cross multiply
    20,896.06x = 31,371.88 × 12,137.26
  4. Step 4: Simplify right side
    20,896.06x = 380,768,664.25
  5. Step 5: Solve for x
    x = 380,768,664.25/20,896.06
  6. Step 6: Final answer
    x = 18,222.03

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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.