Home / 20,678.25-31,027.62-8,198.00

Finding the Fourth Proportional to 20,678.25, 31,027.62 and 8,198.00

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Solution

The fourth proportional to 20,678.25, 31,027.62 and 8,198.00 is: 12,301.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.25 : 31,027.62 = 8,198.00 : x
  2. Step 2: Convert to fraction form
    20,678.25/31,027.62 = 8,198.00/x
  3. Step 3: Cross multiply
    20,678.25x = 31,027.62 × 8,198.00
  4. Step 4: Simplify right side
    20,678.25x = 254,364,420.72
  5. Step 5: Solve for x
    x = 254,364,420.72/20,678.25
  6. Step 6: Final answer
    x = 12,301.06

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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.