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Finding the Fourth Proportional to 13,042.88, 17,992.50 and 8,322.20

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Solution

The fourth proportional to 13,042.88, 17,992.50 and 8,322.20 is: 11,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,042.88 : 17,992.50 = 8,322.20 : x
  2. Step 2: Convert to fraction form
    13,042.88/17,992.50 = 8,322.20/x
  3. Step 3: Cross multiply
    13,042.88x = 17,992.50 × 8,322.20
  4. Step 4: Simplify right side
    13,042.88x = 149,737,183.50
  5. Step 5: Solve for x
    x = 149,737,183.50/13,042.88
  6. Step 6: Final answer
    x = 11,480.38

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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.