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Finding the Fourth Proportional to 18,652.81, 25,732.78 and 10,693.21

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Solution

The fourth proportional to 18,652.81, 25,732.78 and 10,693.21 is: 14,751.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.81 : 25,732.78 = 10,693.21 : x
  2. Step 2: Convert to fraction form
    18,652.81/25,732.78 = 10,693.21/x
  3. Step 3: Cross multiply
    18,652.81x = 25,732.78 × 10,693.21
  4. Step 4: Simplify right side
    18,652.81x = 275,166,020.42
  5. Step 5: Solve for x
    x = 275,166,020.42/18,652.81
  6. Step 6: Final answer
    x = 14,751.99

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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.