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Finding the Fourth Proportional to 9,435.94, 13,021.90 and 5,187.15

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Solution

The fourth proportional to 9,435.94, 13,021.90 and 5,187.15 is: 7,158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,435.94 : 13,021.90 = 5,187.15 : x
  2. Step 2: Convert to fraction form
    9,435.94/13,021.90 = 5,187.15/x
  3. Step 3: Cross multiply
    9,435.94x = 13,021.90 × 5,187.15
  4. Step 4: Simplify right side
    9,435.94x = 67,546,551.02
  5. Step 5: Solve for x
    x = 67,546,551.02/9,435.94
  6. Step 6: Final answer
    x = 7,158.44

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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.