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Finding the Fourth Proportional to 26,794.80, 40,235.40 and 20,228.40

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Solution

The fourth proportional to 26,794.80, 40,235.40 and 20,228.40 is: 30,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,794.80 : 40,235.40 = 20,228.40 : x
  2. Step 2: Convert to fraction form
    26,794.80/40,235.40 = 20,228.40/x
  3. Step 3: Cross multiply
    26,794.80x = 40,235.40 × 20,228.40
  4. Step 4: Simplify right side
    26,794.80x = 813,897,765.36
  5. Step 5: Solve for x
    x = 813,897,765.36/26,794.80
  6. Step 6: Final answer
    x = 30,375.21

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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.