Home / 28,179.23-38,891.48-16,240.23

Finding the Fourth Proportional to 28,179.23, 38,891.48 and 16,240.23

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Solution

The fourth proportional to 28,179.23, 38,891.48 and 16,240.23 is: 22,413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.23 : 38,891.48 = 16,240.23 : x
  2. Step 2: Convert to fraction form
    28,179.23/38,891.48 = 16,240.23/x
  3. Step 3: Cross multiply
    28,179.23x = 38,891.48 × 16,240.23
  4. Step 4: Simplify right side
    28,179.23x = 631,606,499.04
  5. Step 5: Solve for x
    x = 631,606,499.04/28,179.23
  6. Step 6: Final answer
    x = 22,413.91

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Double scale
Find fourth proportional to 28,180.23, 38,892.86 and 16,241.23
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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.