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Finding the Fourth Proportional to 12,518.88, 17,299.08 and 8,976.48

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Solution

The fourth proportional to 12,518.88, 17,299.08 and 8,976.48 is: 12,404.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.88 : 17,299.08 = 8,976.48 : x
  2. Step 2: Convert to fraction form
    12,518.88/17,299.08 = 8,976.48/x
  3. Step 3: Cross multiply
    12,518.88x = 17,299.08 × 8,976.48
  4. Step 4: Simplify right side
    12,518.88x = 155,284,845.64
  5. Step 5: Solve for x
    x = 155,284,845.64/12,518.88
  6. Step 6: Final answer
    x = 12,404.05

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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.