Home / 13,118.22-19,676.12-8,121.33

Finding the Fourth Proportional to 13,118.22, 19,676.12 and 8,121.33

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Solution

The fourth proportional to 13,118.22, 19,676.12 and 8,121.33 is: 12,181.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.22 : 19,676.12 = 8,121.33 : x
  2. Step 2: Convert to fraction form
    13,118.22/19,676.12 = 8,121.33/x
  3. Step 3: Cross multiply
    13,118.22x = 19,676.12 × 8,121.33
  4. Step 4: Simplify right side
    13,118.22x = 159,796,223.03
  5. Step 5: Solve for x
    x = 159,796,223.03/13,118.22
  6. Step 6: Final answer
    x = 12,181.24

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1.5x scale

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.