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Finding the Fourth Proportional to 28,579.70, 42,869.55 and 18,082.10

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Solution

The fourth proportional to 28,579.70, 42,869.55 and 18,082.10 is: 27,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.70 : 42,869.55 = 18,082.10 : x
  2. Step 2: Convert to fraction form
    28,579.70/42,869.55 = 18,082.10/x
  3. Step 3: Cross multiply
    28,579.70x = 42,869.55 × 18,082.10
  4. Step 4: Simplify right side
    28,579.70x = 775,171,490.06
  5. Step 5: Solve for x
    x = 775,171,490.06/28,579.70
  6. Step 6: Final answer
    x = 27,123.15

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