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Finding the Fourth Proportional to 21,273.70, 31,922.70 and 14,704.60

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Solution

The fourth proportional to 21,273.70, 31,922.70 and 14,704.60 is: 22,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.70 : 31,922.70 = 14,704.60 : x
  2. Step 2: Convert to fraction form
    21,273.70/31,922.70 = 14,704.60/x
  3. Step 3: Cross multiply
    21,273.70x = 31,922.70 × 14,704.60
  4. Step 4: Simplify right side
    21,273.70x = 469,410,534.42
  5. Step 5: Solve for x
    x = 469,410,534.42/21,273.70
  6. Step 6: Final answer
    x = 22,065.30

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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.