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Finding the Fourth Proportional to 12,771.39, 19,157.81 and 3,887.01

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Solution

The fourth proportional to 12,771.39, 19,157.81 and 3,887.01 is: 5,830.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771.39 : 19,157.81 = 3,887.01 : x
  2. Step 2: Convert to fraction form
    12,771.39/19,157.81 = 3,887.01/x
  3. Step 3: Cross multiply
    12,771.39x = 19,157.81 × 3,887.01
  4. Step 4: Simplify right side
    12,771.39x = 74,466,646.94
  5. Step 5: Solve for x
    x = 74,466,646.94/12,771.39
  6. Step 6: Final answer
    x = 5,830.74

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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.