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Finding the Fourth Proportional to 18,356.96, 25,333.61 and 10,400.74

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Solution

The fourth proportional to 18,356.96, 25,333.61 and 10,400.74 is: 14,353.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.96 : 25,333.61 = 10,400.74 : x
  2. Step 2: Convert to fraction form
    18,356.96/25,333.61 = 10,400.74/x
  3. Step 3: Cross multiply
    18,356.96x = 25,333.61 × 10,400.74
  4. Step 4: Simplify right side
    18,356.96x = 263,488,290.87
  5. Step 5: Solve for x
    x = 263,488,290.87/18,356.96
  6. Step 6: Final answer
    x = 14,353.59

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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.