Home / 20,855.06-31,278.27-7,698.44

Finding the Fourth Proportional to 20,855.06, 31,278.27 and 7,698.44

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Solution

The fourth proportional to 20,855.06, 31,278.27 and 7,698.44 is: 11,546.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.06 : 31,278.27 = 7,698.44 : x
  2. Step 2: Convert to fraction form
    20,855.06/31,278.27 = 7,698.44/x
  3. Step 3: Cross multiply
    20,855.06x = 31,278.27 × 7,698.44
  4. Step 4: Simplify right side
    20,855.06x = 240,793,884.90
  5. Step 5: Solve for x
    x = 240,793,884.90/20,855.06
  6. Step 6: Final answer
    x = 11,546.07

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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.