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Finding the Fourth Proportional to 18,395.64, 25,384.50 and 10,439.19

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Solution

The fourth proportional to 18,395.64, 25,384.50 and 10,439.19 is: 14,405.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.64 : 25,384.50 = 10,439.19 : x
  2. Step 2: Convert to fraction form
    18,395.64/25,384.50 = 10,439.19/x
  3. Step 3: Cross multiply
    18,395.64x = 25,384.50 × 10,439.19
  4. Step 4: Simplify right side
    18,395.64x = 264,993,618.56
  5. Step 5: Solve for x
    x = 264,993,618.56/18,395.64
  6. Step 6: Final answer
    x = 14,405.24

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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.