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Finding the Fourth Proportional to 18,455.64, 25,468.86 and 10,072.14

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Solution

The fourth proportional to 18,455.64, 25,468.86 and 10,072.14 is: 13,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.64 : 25,468.86 = 10,072.14 : x
  2. Step 2: Convert to fraction form
    18,455.64/25,468.86 = 10,072.14/x
  3. Step 3: Cross multiply
    18,455.64x = 25,468.86 × 10,072.14
  4. Step 4: Simplify right side
    18,455.64x = 256,525,923.56
  5. Step 5: Solve for x
    x = 256,525,923.56/18,455.64
  6. Step 6: Final answer
    x = 13,899.60

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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.