Home / 13,431.31-20,145.58-3,571.58

Finding the Fourth Proportional to 13,431.31, 20,145.58 and 3,571.58

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Solution

The fourth proportional to 13,431.31, 20,145.58 and 3,571.58 is: 5,357.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.31 : 20,145.58 = 3,571.58 : x
  2. Step 2: Convert to fraction form
    13,431.31/20,145.58 = 3,571.58/x
  3. Step 3: Cross multiply
    13,431.31x = 20,145.58 × 3,571.58
  4. Step 4: Simplify right side
    13,431.31x = 71,951,550.62
  5. Step 5: Solve for x
    x = 71,951,550.62/13,431.31
  6. Step 6: Final answer
    x = 5,357.00

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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.