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Finding the Fourth Proportional to 12,685, 19,027.56 and 4,477

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Solution

The fourth proportional to 12,685, 19,027.56 and 4,477 is: 6,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685 : 19,027.56 = 4,477 : x
  2. Step 2: Convert to fraction form
    12,685/19,027.56 = 4,477/x
  3. Step 3: Cross multiply
    12,685x = 19,027.56 × 4,477
  4. Step 4: Simplify right side
    12,685x = 85,186,386.12
  5. Step 5: Solve for x
    x = 85,186,386.12/12,685
  6. Step 6: Final answer
    x = 6,715.52

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