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Finding the Fourth Proportional to 18,949.68, 28,424.88 and 5,098.32

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Solution

The fourth proportional to 18,949.68, 28,424.88 and 5,098.32 is: 7,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.68 : 28,424.88 = 5,098.32 : x
  2. Step 2: Convert to fraction form
    18,949.68/28,424.88 = 5,098.32/x
  3. Step 3: Cross multiply
    18,949.68x = 28,424.88 × 5,098.32
  4. Step 4: Simplify right side
    18,949.68x = 144,919,134.20
  5. Step 5: Solve for x
    x = 144,919,134.20/18,949.68
  6. Step 6: Final answer
    x = 7,647.58

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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.