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Finding the Fourth Proportional to 17,489.85, 26,193.79 and 12,230.11

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Solution

The fourth proportional to 17,489.85, 26,193.79 and 12,230.11 is: 18,316.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,489.85 : 26,193.79 = 12,230.11 : x
  2. Step 2: Convert to fraction form
    17,489.85/26,193.79 = 12,230.11/x
  3. Step 3: Cross multiply
    17,489.85x = 26,193.79 × 12,230.11
  4. Step 4: Simplify right side
    17,489.85x = 320,352,933.02
  5. Step 5: Solve for x
    x = 320,352,933.02/17,489.85
  6. Step 6: Final answer
    x = 18,316.51

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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.