Home / 21,228.99-31,843.44-5,646.61

Finding the Fourth Proportional to 21,228.99, 31,843.44 and 5,646.61

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Solution

The fourth proportional to 21,228.99, 31,843.44 and 5,646.61 is: 8,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.99 : 31,843.44 = 5,646.61 : x
  2. Step 2: Convert to fraction form
    21,228.99/31,843.44 = 5,646.61/x
  3. Step 3: Cross multiply
    21,228.99x = 31,843.44 × 5,646.61
  4. Step 4: Simplify right side
    21,228.99x = 179,807,486.74
  5. Step 5: Solve for x
    x = 179,807,486.74/21,228.99
  6. Step 6: Final answer
    x = 8,469.90

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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.