Home / 20,982.32-31,471.24-13,167.92

Finding the Fourth Proportional to 20,982.32, 31,471.24 and 13,167.92

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Solution

The fourth proportional to 20,982.32, 31,471.24 and 13,167.92 is: 19,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.32 : 31,471.24 = 13,167.92 : x
  2. Step 2: Convert to fraction form
    20,982.32/31,471.24 = 13,167.92/x
  3. Step 3: Cross multiply
    20,982.32x = 31,471.24 × 13,167.92
  4. Step 4: Simplify right side
    20,982.32x = 414,410,770.62
  5. Step 5: Solve for x
    x = 414,410,770.62/20,982.32
  6. Step 6: Final answer
    x = 19,750.47

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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.