Home / 20,976.45-31,464.89-6,185.66

Finding the Fourth Proportional to 20,976.45, 31,464.89 and 6,185.66

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Solution

The fourth proportional to 20,976.45, 31,464.89 and 6,185.66 is: 9,278.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.45 : 31,464.89 = 6,185.66 : x
  2. Step 2: Convert to fraction form
    20,976.45/31,464.89 = 6,185.66/x
  3. Step 3: Cross multiply
    20,976.45x = 31,464.89 × 6,185.66
  4. Step 4: Simplify right side
    20,976.45x = 194,630,923.22
  5. Step 5: Solve for x
    x = 194,630,923.22/20,976.45
  6. Step 6: Final answer
    x = 9,278.54

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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.