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Finding the Fourth Proportional to 39,292.09, 54,224.30 and 21,388.30

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Solution

The fourth proportional to 39,292.09, 54,224.30 and 21,388.30 is: 29,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.09 : 54,224.30 = 21,388.30 : x
  2. Step 2: Convert to fraction form
    39,292.09/54,224.30 = 21,388.30/x
  3. Step 3: Cross multiply
    39,292.09x = 54,224.30 × 21,388.30
  4. Step 4: Simplify right side
    39,292.09x = 1,159,765,513.60
  5. Step 5: Solve for x
    x = 1,159,765,513.60/39,292.09
  6. Step 6: Final answer
    x = 29,516.52

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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.