Home / 27,728.44-38,265.24-15,153.19

Finding the Fourth Proportional to 27,728.44, 38,265.24 and 15,153.19

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Solution

The fourth proportional to 27,728.44, 38,265.24 and 15,153.19 is: 20,911.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.44 : 38,265.24 = 15,153.19 : x
  2. Step 2: Convert to fraction form
    27,728.44/38,265.24 = 15,153.19/x
  3. Step 3: Cross multiply
    27,728.44x = 38,265.24 × 15,153.19
  4. Step 4: Simplify right side
    27,728.44x = 579,840,413.28
  5. Step 5: Solve for x
    x = 579,840,413.28/27,728.44
  6. Step 6: Final answer
    x = 20,911.40

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Half scale
Find fourth proportional to 55,456.88, 76,530.49 and 30,306.38
Double scale
Find fourth proportional to 27,729.44, 38,266.62 and 15,154.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.