Home / 12,186.94-18,281.36-3,867.43

Finding the Fourth Proportional to 12,186.94, 18,281.36 and 3,867.43

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Solution

The fourth proportional to 12,186.94, 18,281.36 and 3,867.43 is: 5,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.94 : 18,281.36 = 3,867.43 : x
  2. Step 2: Convert to fraction form
    12,186.94/18,281.36 = 3,867.43/x
  3. Step 3: Cross multiply
    12,186.94x = 18,281.36 × 3,867.43
  4. Step 4: Simplify right side
    12,186.94x = 70,701,880.10
  5. Step 5: Solve for x
    x = 70,701,880.10/12,186.94
  6. Step 6: Final answer
    x = 5,801.45

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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.