Home / 21,961.66-30,311.67-20,190.46

Finding the Fourth Proportional to 21,961.66, 30,311.67 and 20,190.46

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Solution

The fourth proportional to 21,961.66, 30,311.67 and 20,190.46 is: 27,867.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.66 : 30,311.67 = 20,190.46 : x
  2. Step 2: Convert to fraction form
    21,961.66/30,311.67 = 20,190.46/x
  3. Step 3: Cross multiply
    21,961.66x = 30,311.67 × 20,190.46
  4. Step 4: Simplify right side
    21,961.66x = 612,006,560.67
  5. Step 5: Solve for x
    x = 612,006,560.67/21,961.66
  6. Step 6: Final answer
    x = 27,867.04

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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.