Home / 20,405.98-30,611.90-6,367.27

Finding the Fourth Proportional to 20,405.98, 30,611.90 and 6,367.27

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Solution

The fourth proportional to 20,405.98, 30,611.90 and 6,367.27 is: 9,551.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.98 : 30,611.90 = 6,367.27 : x
  2. Step 2: Convert to fraction form
    20,405.98/30,611.90 = 6,367.27/x
  3. Step 3: Cross multiply
    20,405.98x = 30,611.90 × 6,367.27
  4. Step 4: Simplify right side
    20,405.98x = 194,914,125.29
  5. Step 5: Solve for x
    x = 194,914,125.29/20,405.98
  6. Step 6: Final answer
    x = 9,551.81

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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.