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Finding the Fourth Proportional to 38,391, 57,589.80 and 10,689

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Solution

The fourth proportional to 38,391, 57,589.80 and 10,689 is: 16,034.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,391 : 57,589.80 = 10,689 : x
  2. Step 2: Convert to fraction form
    38,391/57,589.80 = 10,689/x
  3. Step 3: Cross multiply
    38,391x = 57,589.80 × 10,689
  4. Step 4: Simplify right side
    38,391x = 615,577,372.20
  5. Step 5: Solve for x
    x = 615,577,372.20/38,391
  6. Step 6: Final answer
    x = 16,034.42

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