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Finding the Fourth Proportional to 20,450.70, 30,671.73 and 7,303.86

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Solution

The fourth proportional to 20,450.70, 30,671.73 and 7,303.86 is: 10,954.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.70 : 30,671.73 = 7,303.86 : x
  2. Step 2: Convert to fraction form
    20,450.70/30,671.73 = 7,303.86/x
  3. Step 3: Cross multiply
    20,450.70x = 30,671.73 × 7,303.86
  4. Step 4: Simplify right side
    20,450.70x = 224,022,021.88
  5. Step 5: Solve for x
    x = 224,022,021.88/20,450.70
  6. Step 6: Final answer
    x = 10,954.25

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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.