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Finding the Fourth Proportional to 39,233.98, 54,143.94 and 21,330.19

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Solution

The fourth proportional to 39,233.98, 54,143.94 and 21,330.19 is: 29,436.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,233.98 : 54,143.94 = 21,330.19 : x
  2. Step 2: Convert to fraction form
    39,233.98/54,143.94 = 21,330.19/x
  3. Step 3: Cross multiply
    39,233.98x = 54,143.94 × 21,330.19
  4. Step 4: Simplify right side
    39,233.98x = 1,154,900,527.55
  5. Step 5: Solve for x
    x = 1,154,900,527.55/39,233.98
  6. Step 6: Final answer
    x = 29,436.23

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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.