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Finding the Fourth Proportional to 17,957.89, 26,936.85 and 5,645.89

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Solution

The fourth proportional to 17,957.89, 26,936.85 and 5,645.89 is: 8,468.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,957.89 : 26,936.85 = 5,645.89 : x
  2. Step 2: Convert to fraction form
    17,957.89/26,936.85 = 5,645.89/x
  3. Step 3: Cross multiply
    17,957.89x = 26,936.85 × 5,645.89
  4. Step 4: Simplify right side
    17,957.89x = 152,082,492.05
  5. Step 5: Solve for x
    x = 152,082,492.05/17,957.89
  6. Step 6: Final answer
    x = 8,468.84

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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.