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Finding the Fourth Proportional to 20,591.52, 30,889.68 and 7,450.08

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Solution

The fourth proportional to 20,591.52, 30,889.68 and 7,450.08 is: 11,175.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.52 : 30,889.68 = 7,450.08 : x
  2. Step 2: Convert to fraction form
    20,591.52/30,889.68 = 7,450.08/x
  3. Step 3: Cross multiply
    20,591.52x = 30,889.68 × 7,450.08
  4. Step 4: Simplify right side
    20,591.52x = 230,130,587.17
  5. Step 5: Solve for x
    x = 230,130,587.17/20,591.52
  6. Step 6: Final answer
    x = 11,175.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.