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Finding the Fourth Proportional to 30,944.70, 42,704.01 and 16,797.78

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Solution

The fourth proportional to 30,944.70, 42,704.01 and 16,797.78 is: 23,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,944.70 : 42,704.01 = 16,797.78 : x
  2. Step 2: Convert to fraction form
    30,944.70/42,704.01 = 16,797.78/x
  3. Step 3: Cross multiply
    30,944.70x = 42,704.01 × 16,797.78
  4. Step 4: Simplify right side
    30,944.70x = 717,332,565.10
  5. Step 5: Solve for x
    x = 717,332,565.10/30,944.70
  6. Step 6: Final answer
    x = 23,181.11

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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.