Home / 21,410.22-32,120.68-8,083.19

Finding the Fourth Proportional to 21,410.22, 32,120.68 and 8,083.19

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Solution

The fourth proportional to 21,410.22, 32,120.68 and 8,083.19 is: 12,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,410.22 : 32,120.68 = 8,083.19 : x
  2. Step 2: Convert to fraction form
    21,410.22/32,120.68 = 8,083.19/x
  3. Step 3: Cross multiply
    21,410.22x = 32,120.68 × 8,083.19
  4. Step 4: Simplify right side
    21,410.22x = 259,637,559.37
  5. Step 5: Solve for x
    x = 259,637,559.37/21,410.22
  6. Step 6: Final answer
    x = 12,126.80

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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.