Home / 20,843.82-31,268.16-8,368.20

Finding the Fourth Proportional to 20,843.82, 31,268.16 and 8,368.20

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Solution

The fourth proportional to 20,843.82, 31,268.16 and 8,368.20 is: 12,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.82 : 31,268.16 = 8,368.20 : x
  2. Step 2: Convert to fraction form
    20,843.82/31,268.16 = 8,368.20/x
  3. Step 3: Cross multiply
    20,843.82x = 31,268.16 × 8,368.20
  4. Step 4: Simplify right side
    20,843.82x = 261,658,216.51
  5. Step 5: Solve for x
    x = 261,658,216.51/20,843.82
  6. Step 6: Final answer
    x = 12,553.28

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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.