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Finding the Fourth Proportional to 17,879.30, 26,808.57 and 11,962.96

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Solution

The fourth proportional to 17,879.30, 26,808.57 and 11,962.96 is: 17,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,879.30 : 26,808.57 = 11,962.96 : x
  2. Step 2: Convert to fraction form
    17,879.30/26,808.57 = 11,962.96/x
  3. Step 3: Cross multiply
    17,879.30x = 26,808.57 × 11,962.96
  4. Step 4: Simplify right side
    17,879.30x = 320,709,783.55
  5. Step 5: Solve for x
    x = 320,709,783.55/17,879.30
  6. Step 6: Final answer
    x = 17,937.49

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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.