Home / 20,515.44-30,778.70-6,476.04

Finding the Fourth Proportional to 20,515.44, 30,778.70 and 6,476.04

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Solution

The fourth proportional to 20,515.44, 30,778.70 and 6,476.04 is: 9,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.44 : 30,778.70 = 6,476.04 : x
  2. Step 2: Convert to fraction form
    20,515.44/30,778.70 = 6,476.04/x
  3. Step 3: Cross multiply
    20,515.44x = 30,778.70 × 6,476.04
  4. Step 4: Simplify right side
    20,515.44x = 199,324,092.35
  5. Step 5: Solve for x
    x = 199,324,092.35/20,515.44
  6. Step 6: Final answer
    x = 9,715.81

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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.