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Finding the Fourth Proportional to 26,279.40, 39,447.90 and 16,429.80

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Solution

The fourth proportional to 26,279.40, 39,447.90 and 16,429.80 is: 24,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,279.40 : 39,447.90 = 16,429.80 : x
  2. Step 2: Convert to fraction form
    26,279.40/39,447.90 = 16,429.80/x
  3. Step 3: Cross multiply
    26,279.40x = 39,447.90 × 16,429.80
  4. Step 4: Simplify right side
    26,279.40x = 648,121,107.42
  5. Step 5: Solve for x
    x = 648,121,107.42/26,279.40
  6. Step 6: Final answer
    x = 24,662.71

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1.5x scale

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.