Home / 12,193.05-18,287.71-3,871.99

Finding the Fourth Proportional to 12,193.05, 18,287.71 and 3,871.99

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Solution

The fourth proportional to 12,193.05, 18,287.71 and 3,871.99 is: 5,807.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.05 : 18,287.71 = 3,871.99 : x
  2. Step 2: Convert to fraction form
    12,193.05/18,287.71 = 3,871.99/x
  3. Step 3: Cross multiply
    12,193.05x = 18,287.71 × 3,871.99
  4. Step 4: Simplify right side
    12,193.05x = 70,809,830.24
  5. Step 5: Solve for x
    x = 70,809,830.24/12,193.05
  6. Step 6: Final answer
    x = 5,807.39

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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.