Home / 31,211.68-43,063.44-18,631.84

Finding the Fourth Proportional to 31,211.68, 43,063.44 and 18,631.84

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Solution

The fourth proportional to 31,211.68, 43,063.44 and 18,631.84 is: 25,706.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.68 : 43,063.44 = 18,631.84 : x
  2. Step 2: Convert to fraction form
    31,211.68/43,063.44 = 18,631.84/x
  3. Step 3: Cross multiply
    31,211.68x = 43,063.44 × 18,631.84
  4. Step 4: Simplify right side
    31,211.68x = 802,351,123.93
  5. Step 5: Solve for x
    x = 802,351,123.93/31,211.68
  6. Step 6: Final answer
    x = 25,706.76

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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.