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Finding the Fourth Proportional to 12,104.88, 18,164.28 and 5,084.28

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Solution

The fourth proportional to 12,104.88, 18,164.28 and 5,084.28 is: 7,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,104.88 : 18,164.28 = 5,084.28 : x
  2. Step 2: Convert to fraction form
    12,104.88/18,164.28 = 5,084.28/x
  3. Step 3: Cross multiply
    12,104.88x = 18,164.28 × 5,084.28
  4. Step 4: Simplify right side
    12,104.88x = 92,352,285.52
  5. Step 5: Solve for x
    x = 92,352,285.52/12,104.88
  6. Step 6: Final answer
    x = 7,629.34

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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.