Home / 20,243.89-27,924.87-12,171.94

Finding the Fourth Proportional to 20,243.89, 27,924.87 and 12,171.94

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Solution

The fourth proportional to 20,243.89, 27,924.87 and 12,171.94 is: 16,790.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.89 : 27,924.87 = 12,171.94 : x
  2. Step 2: Convert to fraction form
    20,243.89/27,924.87 = 12,171.94/x
  3. Step 3: Cross multiply
    20,243.89x = 27,924.87 × 12,171.94
  4. Step 4: Simplify right side
    20,243.89x = 339,899,764.99
  5. Step 5: Solve for x
    x = 339,899,764.99/20,243.89
  6. Step 6: Final answer
    x = 16,790.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.