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Finding the Fourth Proportional to 18,376.47, 25,359.48 and 9,992.97

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Solution

The fourth proportional to 18,376.47, 25,359.48 and 9,992.97 is: 13,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.47 : 25,359.48 = 9,992.97 : x
  2. Step 2: Convert to fraction form
    18,376.47/25,359.48 = 9,992.97/x
  3. Step 3: Cross multiply
    18,376.47x = 25,359.48 × 9,992.97
  4. Step 4: Simplify right side
    18,376.47x = 253,416,522.86
  5. Step 5: Solve for x
    x = 253,416,522.86/18,376.47
  6. Step 6: Final answer
    x = 13,790.27

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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.