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Finding the Fourth Proportional to 18,573.99, 25,631.78 and 10,190.31

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Solution

The fourth proportional to 18,573.99, 25,631.78 and 10,190.31 is: 14,062.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.99 : 25,631.78 = 10,190.31 : x
  2. Step 2: Convert to fraction form
    18,573.99/25,631.78 = 10,190.31/x
  3. Step 3: Cross multiply
    18,573.99x = 25,631.78 × 10,190.31
  4. Step 4: Simplify right side
    18,573.99x = 261,195,784.05
  5. Step 5: Solve for x
    x = 261,195,784.05/18,573.99
  6. Step 6: Final answer
    x = 14,062.45

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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.