Home / 31,211.44-43,071.79-20,052.88

Finding the Fourth Proportional to 31,211.44, 43,071.79 and 20,052.88

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Solution

The fourth proportional to 31,211.44, 43,071.79 and 20,052.88 is: 27,672.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.44 : 43,071.79 = 20,052.88 : x
  2. Step 2: Convert to fraction form
    31,211.44/43,071.79 = 20,052.88/x
  3. Step 3: Cross multiply
    31,211.44x = 43,071.79 × 20,052.88
  4. Step 4: Simplify right side
    31,211.44x = 863,713,278.44
  5. Step 5: Solve for x
    x = 863,713,278.44/31,211.44
  6. Step 6: Final answer
    x = 27,672.97

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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.