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Finding the Fourth Proportional to 37,672.75, 51,990.83 and 20,905.75

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Solution

The fourth proportional to 37,672.75, 51,990.83 and 20,905.75 is: 28,851.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,672.75 : 51,990.83 = 20,905.75 : x
  2. Step 2: Convert to fraction form
    37,672.75/51,990.83 = 20,905.75/x
  3. Step 3: Cross multiply
    37,672.75x = 51,990.83 × 20,905.75
  4. Step 4: Simplify right side
    37,672.75x = 1,086,907,294.27
  5. Step 5: Solve for x
    x = 1,086,907,294.27/37,672.75
  6. Step 6: Final answer
    x = 28,851.29

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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.