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Finding the Fourth Proportional to 38,403.50, 52,996.83 and 20,739.50

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Solution

The fourth proportional to 38,403.50, 52,996.83 and 20,739.50 is: 28,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,403.50 : 52,996.83 = 20,739.50 : x
  2. Step 2: Convert to fraction form
    38,403.50/52,996.83 = 20,739.50/x
  3. Step 3: Cross multiply
    38,403.50x = 52,996.83 × 20,739.50
  4. Step 4: Simplify right side
    38,403.50x = 1,099,127,755.79
  5. Step 5: Solve for x
    x = 1,099,127,755.79/38,403.50
  6. Step 6: Final answer
    x = 28,620.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.