Home / 20,339.42-30,485.70-7,853.94

Finding the Fourth Proportional to 20,339.42, 30,485.70 and 7,853.94

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Solution

The fourth proportional to 20,339.42, 30,485.70 and 7,853.94 is: 11,771.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.42 : 30,485.70 = 7,853.94 : x
  2. Step 2: Convert to fraction form
    20,339.42/30,485.70 = 7,853.94/x
  3. Step 3: Cross multiply
    20,339.42x = 30,485.70 × 7,853.94
  4. Step 4: Simplify right side
    20,339.42x = 239,432,858.66
  5. Step 5: Solve for x
    x = 239,432,858.66/20,339.42
  6. Step 6: Final answer
    x = 11,771.87

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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.