Home / 12,628.47-18,942.75-3,863.36

Finding the Fourth Proportional to 12,628.47, 18,942.75 and 3,863.36

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Solution

The fourth proportional to 12,628.47, 18,942.75 and 3,863.36 is: 5,795.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.47 : 18,942.75 = 3,863.36 : x
  2. Step 2: Convert to fraction form
    12,628.47/18,942.75 = 3,863.36/x
  3. Step 3: Cross multiply
    12,628.47x = 18,942.75 × 3,863.36
  4. Step 4: Simplify right side
    12,628.47x = 73,182,567.93
  5. Step 5: Solve for x
    x = 73,182,567.93/12,628.47
  6. Step 6: Final answer
    x = 5,795.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.