Home / 21,999.33-30,353.82-12,439.41

Finding the Fourth Proportional to 21,999.33, 30,353.82 and 12,439.41

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Solution

The fourth proportional to 21,999.33, 30,353.82 and 12,439.41 is: 17,163.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.33 : 30,353.82 = 12,439.41 : x
  2. Step 2: Convert to fraction form
    21,999.33/30,353.82 = 12,439.41/x
  3. Step 3: Cross multiply
    21,999.33x = 30,353.82 × 12,439.41
  4. Step 4: Simplify right side
    21,999.33x = 377,583,612.05
  5. Step 5: Solve for x
    x = 377,583,612.05/21,999.33
  6. Step 6: Final answer
    x = 17,163.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.