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Finding the Fourth Proportional to 18,668.79, 27,995.88 and 8,273.25

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Solution

The fourth proportional to 18,668.79, 27,995.88 and 8,273.25 is: 12,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.79 : 27,995.88 = 8,273.25 : x
  2. Step 2: Convert to fraction form
    18,668.79/27,995.88 = 8,273.25/x
  3. Step 3: Cross multiply
    18,668.79x = 27,995.88 × 8,273.25
  4. Step 4: Simplify right side
    18,668.79x = 231,616,914.21
  5. Step 5: Solve for x
    x = 231,616,914.21/18,668.79
  6. Step 6: Final answer
    x = 12,406.64

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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.