Home / 20,474.96-30,706.90-8,785.44

Finding the Fourth Proportional to 20,474.96, 30,706.90 and 8,785.44

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Solution

The fourth proportional to 20,474.96, 30,706.90 and 8,785.44 is: 13,175.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.96 : 30,706.90 = 8,785.44 : x
  2. Step 2: Convert to fraction form
    20,474.96/30,706.90 = 8,785.44/x
  3. Step 3: Cross multiply
    20,474.96x = 30,706.90 × 8,785.44
  4. Step 4: Simplify right side
    20,474.96x = 269,773,605.57
  5. Step 5: Solve for x
    x = 269,773,605.57/20,474.96
  6. Step 6: Final answer
    x = 13,175.79

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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.