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Finding the Fourth Proportional to 38,448.63, 57,672.60 and 12,153.39

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Solution

The fourth proportional to 38,448.63, 57,672.60 and 12,153.39 is: 18,229.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,448.63 : 57,672.60 = 12,153.39 : x
  2. Step 2: Convert to fraction form
    38,448.63/57,672.60 = 12,153.39/x
  3. Step 3: Cross multiply
    38,448.63x = 57,672.60 × 12,153.39
  4. Step 4: Simplify right side
    38,448.63x = 700,917,600.11
  5. Step 5: Solve for x
    x = 700,917,600.11/38,448.63
  6. Step 6: Final answer
    x = 18,229.98

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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.