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Finding the Fourth Proportional to 12,931.41, 17,845.36 and 7,342.41

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Solution

The fourth proportional to 12,931.41, 17,845.36 and 7,342.41 is: 10,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.41 : 17,845.36 = 7,342.41 : x
  2. Step 2: Convert to fraction form
    12,931.41/17,845.36 = 7,342.41/x
  3. Step 3: Cross multiply
    12,931.41x = 17,845.36 × 7,342.41
  4. Step 4: Simplify right side
    12,931.41x = 131,027,949.72
  5. Step 5: Solve for x
    x = 131,027,949.72/12,931.41
  6. Step 6: Final answer
    x = 10,132.53

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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.