Home / 12,190.40-18,283.73-3,869.33

Finding the Fourth Proportional to 12,190.40, 18,283.73 and 3,869.33

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Solution

The fourth proportional to 12,190.40, 18,283.73 and 3,869.33 is: 5,803.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.40 : 18,283.73 = 3,869.33 : x
  2. Step 2: Convert to fraction form
    12,190.40/18,283.73 = 3,869.33/x
  3. Step 3: Cross multiply
    12,190.40x = 18,283.73 × 3,869.33
  4. Step 4: Simplify right side
    12,190.40x = 70,745,674.24
  5. Step 5: Solve for x
    x = 70,745,674.24/12,190.40
  6. Step 6: Final answer
    x = 5,803.39

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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.