Home / 20,969.58-31,454.37-5,387.22

Finding the Fourth Proportional to 20,969.58, 31,454.37 and 5,387.22

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Solution

The fourth proportional to 20,969.58, 31,454.37 and 5,387.22 is: 8,080.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.58 : 31,454.37 = 5,387.22 : x
  2. Step 2: Convert to fraction form
    20,969.58/31,454.37 = 5,387.22/x
  3. Step 3: Cross multiply
    20,969.58x = 31,454.37 × 5,387.22
  4. Step 4: Simplify right side
    20,969.58x = 169,451,611.15
  5. Step 5: Solve for x
    x = 169,451,611.15/20,969.58
  6. Step 6: Final answer
    x = 8,080.83

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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.