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Finding the Fourth Proportional to 18,461.56, 25,476.97 and 11,392.09

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Solution

The fourth proportional to 18,461.56, 25,476.97 and 11,392.09 is: 15,721.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.56 : 25,476.97 = 11,392.09 : x
  2. Step 2: Convert to fraction form
    18,461.56/25,476.97 = 11,392.09/x
  3. Step 3: Cross multiply
    18,461.56x = 25,476.97 × 11,392.09
  4. Step 4: Simplify right side
    18,461.56x = 290,235,935.17
  5. Step 5: Solve for x
    x = 290,235,935.17/18,461.56
  6. Step 6: Final answer
    x = 15,721.09

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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.