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Finding the Fourth Proportional to 13,631.55, 20,458.26 and 7,059.63

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Solution

The fourth proportional to 13,631.55, 20,458.26 and 7,059.63 is: 10,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.55 : 20,458.26 = 7,059.63 : x
  2. Step 2: Convert to fraction form
    13,631.55/20,458.26 = 7,059.63/x
  3. Step 3: Cross multiply
    13,631.55x = 20,458.26 × 7,059.63
  4. Step 4: Simplify right side
    13,631.55x = 144,427,746.04
  5. Step 5: Solve for x
    x = 144,427,746.04/13,631.55
  6. Step 6: Final answer
    x = 10,595.11

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