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Finding the Fourth Proportional to 20,620.26, 30,934.94 and 8,773.40

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Solution

The fourth proportional to 20,620.26, 30,934.94 and 8,773.40 is: 13,162.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.26 : 30,934.94 = 8,773.40 : x
  2. Step 2: Convert to fraction form
    20,620.26/30,934.94 = 8,773.40/x
  3. Step 3: Cross multiply
    20,620.26x = 30,934.94 × 8,773.40
  4. Step 4: Simplify right side
    20,620.26x = 271,404,602.60
  5. Step 5: Solve for x
    x = 271,404,602.60/20,620.26
  6. Step 6: Final answer
    x = 13,162.04

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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.