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Finding the Fourth Proportional to 18,656.33, 27,976.59 and 5,505.17

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Solution

The fourth proportional to 18,656.33, 27,976.59 and 5,505.17 is: 8,255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.33 : 27,976.59 = 5,505.17 : x
  2. Step 2: Convert to fraction form
    18,656.33/27,976.59 = 5,505.17/x
  3. Step 3: Cross multiply
    18,656.33x = 27,976.59 × 5,505.17
  4. Step 4: Simplify right side
    18,656.33x = 154,015,744.09
  5. Step 5: Solve for x
    x = 154,015,744.09/18,656.33
  6. Step 6: Final answer
    x = 8,255.42

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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.