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Finding the Fourth Proportional to 20,611.67, 30,919.93 and 6,566.81

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Solution

The fourth proportional to 20,611.67, 30,919.93 and 6,566.81 is: 9,850.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.67 : 30,919.93 = 6,566.81 : x
  2. Step 2: Convert to fraction form
    20,611.67/30,919.93 = 6,566.81/x
  3. Step 3: Cross multiply
    20,611.67x = 30,919.93 × 6,566.81
  4. Step 4: Simplify right side
    20,611.67x = 203,045,134.51
  5. Step 5: Solve for x
    x = 203,045,134.51/20,611.67
  6. Step 6: Final answer
    x = 9,850.98

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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.