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Finding the Fourth Proportional to 26,939.70, 40,404.03 and 16,939.86

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Solution

The fourth proportional to 26,939.70, 40,404.03 and 16,939.86 is: 25,406.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,939.70 : 40,404.03 = 16,939.86 : x
  2. Step 2: Convert to fraction form
    26,939.70/40,404.03 = 16,939.86/x
  3. Step 3: Cross multiply
    26,939.70x = 40,404.03 × 16,939.86
  4. Step 4: Simplify right side
    26,939.70x = 684,438,611.64
  5. Step 5: Solve for x
    x = 684,438,611.64/26,939.70
  6. Step 6: Final answer
    x = 25,406.32

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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.