Home / 26,644.94-39,979.20-13,991.72

Finding the Fourth Proportional to 26,644.94, 39,979.20 and 13,991.72

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Solution

The fourth proportional to 26,644.94, 39,979.20 and 13,991.72 is: 20,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,644.94 : 39,979.20 = 13,991.72 : x
  2. Step 2: Convert to fraction form
    26,644.94/39,979.20 = 13,991.72/x
  3. Step 3: Cross multiply
    26,644.94x = 39,979.20 × 13,991.72
  4. Step 4: Simplify right side
    26,644.94x = 559,377,772.22
  5. Step 5: Solve for x
    x = 559,377,772.22/26,644.94
  6. Step 6: Final answer
    x = 20,993.77

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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.