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Finding the Fourth Proportional to 20,850.66, 28,774.02 and 12,352.32

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Solution

The fourth proportional to 20,850.66, 28,774.02 and 12,352.32 is: 17,046.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.66 : 28,774.02 = 12,352.32 : x
  2. Step 2: Convert to fraction form
    20,850.66/28,774.02 = 12,352.32/x
  3. Step 3: Cross multiply
    20,850.66x = 28,774.02 × 12,352.32
  4. Step 4: Simplify right side
    20,850.66x = 355,425,902.73
  5. Step 5: Solve for x
    x = 355,425,902.73/20,850.66
  6. Step 6: Final answer
    x = 17,046.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.