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Finding the Fourth Proportional to 18,291.75, 27,273.71 and 17,959.60

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Solution

The fourth proportional to 18,291.75, 27,273.71 and 17,959.60 is: 26,778.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.75 : 27,273.71 = 17,959.60 : x
  2. Step 2: Convert to fraction form
    18,291.75/27,273.71 = 17,959.60/x
  3. Step 3: Cross multiply
    18,291.75x = 27,273.71 × 17,959.60
  4. Step 4: Simplify right side
    18,291.75x = 489,824,922.12
  5. Step 5: Solve for x
    x = 489,824,922.12/18,291.75
  6. Step 6: Final answer
    x = 26,778.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.