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Finding the Fourth Proportional to 18,275.97, 27,375.68 and 11,668.50

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Solution

The fourth proportional to 18,275.97, 27,375.68 and 11,668.50 is: 17,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.97 : 27,375.68 = 11,668.50 : x
  2. Step 2: Convert to fraction form
    18,275.97/27,375.68 = 11,668.50/x
  3. Step 3: Cross multiply
    18,275.97x = 27,375.68 × 11,668.50
  4. Step 4: Simplify right side
    18,275.97x = 319,433,151.25
  5. Step 5: Solve for x
    x = 319,433,151.25/18,275.97
  6. Step 6: Final answer
    x = 17,478.31

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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.