Home / 12,188.84-18,283.90-3,869.48

Finding the Fourth Proportional to 12,188.84, 18,283.90 and 3,869.48

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Solution

The fourth proportional to 12,188.84, 18,283.90 and 3,869.48 is: 5,804.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.84 : 18,283.90 = 3,869.48 : x
  2. Step 2: Convert to fraction form
    12,188.84/18,283.90 = 3,869.48/x
  3. Step 3: Cross multiply
    12,188.84x = 18,283.90 × 3,869.48
  4. Step 4: Simplify right side
    12,188.84x = 70,749,185.37
  5. Step 5: Solve for x
    x = 70,749,185.37/12,188.84
  6. Step 6: Final answer
    x = 5,804.42

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1.5x scale

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.