Home / 21,940.12-30,245.04-15,546.96

Finding the Fourth Proportional to 21,940.12, 30,245.04 and 15,546.96

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Solution

The fourth proportional to 21,940.12, 30,245.04 and 15,546.96 is: 21,431.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,940.12 : 30,245.04 = 15,546.96 : x
  2. Step 2: Convert to fraction form
    21,940.12/30,245.04 = 15,546.96/x
  3. Step 3: Cross multiply
    21,940.12x = 30,245.04 × 15,546.96
  4. Step 4: Simplify right side
    21,940.12x = 470,218,427.08
  5. Step 5: Solve for x
    x = 470,218,427.08/21,940.12
  6. Step 6: Final answer
    x = 21,431.90

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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.