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Finding the Fourth Proportional to 20,597.56, 28,423.51 and 11,644.54

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Solution

The fourth proportional to 20,597.56, 28,423.51 and 11,644.54 is: 16,068.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.56 : 28,423.51 = 11,644.54 : x
  2. Step 2: Convert to fraction form
    20,597.56/28,423.51 = 11,644.54/x
  3. Step 3: Cross multiply
    20,597.56x = 28,423.51 × 11,644.54
  4. Step 4: Simplify right side
    20,597.56x = 330,978,699.14
  5. Step 5: Solve for x
    x = 330,978,699.14/20,597.56
  6. Step 6: Final answer
    x = 16,068.83

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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.