Home / 20,754.70-31,141.19-10,891.60

Finding the Fourth Proportional to 20,754.70, 31,141.19 and 10,891.60

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Solution

The fourth proportional to 20,754.70, 31,141.19 and 10,891.60 is: 16,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.70 : 31,141.19 = 10,891.60 : x
  2. Step 2: Convert to fraction form
    20,754.70/31,141.19 = 10,891.60/x
  3. Step 3: Cross multiply
    20,754.70x = 31,141.19 × 10,891.60
  4. Step 4: Simplify right side
    20,754.70x = 339,177,334.38
  5. Step 5: Solve for x
    x = 339,177,334.38/20,754.70
  6. Step 6: Final answer
    x = 16,342.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.