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Finding the Fourth Proportional to 18,474.08, 25,491.92 and 10,515.22

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Solution

The fourth proportional to 18,474.08, 25,491.92 and 10,515.22 is: 14,509.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.08 : 25,491.92 = 10,515.22 : x
  2. Step 2: Convert to fraction form
    18,474.08/25,491.92 = 10,515.22/x
  3. Step 3: Cross multiply
    18,474.08x = 25,491.92 × 10,515.22
  4. Step 4: Simplify right side
    18,474.08x = 268,053,030.72
  5. Step 5: Solve for x
    x = 268,053,030.72/18,474.08
  6. Step 6: Final answer
    x = 14,509.69

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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.