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Finding the Fourth Proportional to 28,327.50, 42,491.26 and 13,491.44

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Solution

The fourth proportional to 28,327.50, 42,491.26 and 13,491.44 is: 20,237.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,327.50 : 42,491.26 = 13,491.44 : x
  2. Step 2: Convert to fraction form
    28,327.50/42,491.26 = 13,491.44/x
  3. Step 3: Cross multiply
    28,327.50x = 42,491.26 × 13,491.44
  4. Step 4: Simplify right side
    28,327.50x = 573,268,284.81
  5. Step 5: Solve for x
    x = 573,268,284.81/28,327.50
  6. Step 6: Final answer
    x = 20,237.16

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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.