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Finding the Fourth Proportional to 20,693.81, 28,557.46 and 11,262.44

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Solution

The fourth proportional to 20,693.81, 28,557.46 and 11,262.44 is: 15,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.81 : 28,557.46 = 11,262.44 : x
  2. Step 2: Convert to fraction form
    20,693.81/28,557.46 = 11,262.44/x
  3. Step 3: Cross multiply
    20,693.81x = 28,557.46 × 11,262.44
  4. Step 4: Simplify right side
    20,693.81x = 321,626,765.27
  5. Step 5: Solve for x
    x = 321,626,765.27/20,693.81
  6. Step 6: Final answer
    x = 15,542.17

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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.