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Finding the Fourth Proportional to 39,565, 54,599.82 and 21,660.16

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Solution

The fourth proportional to 39,565, 54,599.82 and 21,660.16 is: 29,891.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,565 : 54,599.82 = 21,660.16 : x
  2. Step 2: Convert to fraction form
    39,565/54,599.82 = 21,660.16/x
  3. Step 3: Cross multiply
    39,565x = 54,599.82 × 21,660.16
  4. Step 4: Simplify right side
    39,565x = 1,182,640,837.17
  5. Step 5: Solve for x
    x = 1,182,640,837.17/39,565
  6. Step 6: Final answer
    x = 29,891.09

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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.