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Finding the Fourth Proportional to 20,597.58, 28,424.36 and 11,644.79

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Solution

The fourth proportional to 20,597.58, 28,424.36 and 11,644.79 is: 16,069.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.58 : 28,424.36 = 11,644.79 : x
  2. Step 2: Convert to fraction form
    20,597.58/28,424.36 = 11,644.79/x
  3. Step 3: Cross multiply
    20,597.58x = 28,424.36 × 11,644.79
  4. Step 4: Simplify right side
    20,597.58x = 330,995,590.07
  5. Step 5: Solve for x
    x = 330,995,590.07/20,597.58
  6. Step 6: Final answer
    x = 16,069.63

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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.