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Finding the Fourth Proportional to 18,574.31, 25,632.55 and 10,190.81

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Solution

The fourth proportional to 18,574.31, 25,632.55 and 10,190.81 is: 14,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.31 : 25,632.55 = 10,190.81 : x
  2. Step 2: Convert to fraction form
    18,574.31/25,632.55 = 10,190.81/x
  3. Step 3: Cross multiply
    18,574.31x = 25,632.55 × 10,190.81
  4. Step 4: Simplify right side
    18,574.31x = 261,216,523.69
  5. Step 5: Solve for x
    x = 261,216,523.69/18,574.31
  6. Step 6: Final answer
    x = 14,063.32

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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.