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Finding the Fourth Proportional to 18,273.36, 27,363.60 and 12,412.08

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Solution

The fourth proportional to 18,273.36, 27,363.60 and 12,412.08 is: 18,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.36 : 27,363.60 = 12,412.08 : x
  2. Step 2: Convert to fraction form
    18,273.36/27,363.60 = 12,412.08/x
  3. Step 3: Cross multiply
    18,273.36x = 27,363.60 × 12,412.08
  4. Step 4: Simplify right side
    18,273.36x = 339,639,192.29
  5. Step 5: Solve for x
    x = 339,639,192.29/18,273.36
  6. Step 6: Final answer
    x = 18,586.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.