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Finding the Fourth Proportional to 18,809.81, 28,194.83 and 6,955.97

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Solution

The fourth proportional to 18,809.81, 28,194.83 and 6,955.97 is: 10,426.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.81 : 28,194.83 = 6,955.97 : x
  2. Step 2: Convert to fraction form
    18,809.81/28,194.83 = 6,955.97/x
  3. Step 3: Cross multiply
    18,809.81x = 28,194.83 × 6,955.97
  4. Step 4: Simplify right side
    18,809.81x = 196,122,391.64
  5. Step 5: Solve for x
    x = 196,122,391.64/18,809.81
  6. Step 6: Final answer
    x = 10,426.60

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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.