Home / 21,195.02-31,786.43-8,544.78

Finding the Fourth Proportional to 21,195.02, 31,786.43 and 8,544.78

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Solution

The fourth proportional to 21,195.02, 31,786.43 and 8,544.78 is: 12,814.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.02 : 31,786.43 = 8,544.78 : x
  2. Step 2: Convert to fraction form
    21,195.02/31,786.43 = 8,544.78/x
  3. Step 3: Cross multiply
    21,195.02x = 31,786.43 × 8,544.78
  4. Step 4: Simplify right side
    21,195.02x = 271,608,008.61
  5. Step 5: Solve for x
    x = 271,608,008.61/21,195.02
  6. Step 6: Final answer
    x = 12,814.71

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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.