Home / 28,991.27-43,499.39-15,661.61

Finding the Fourth Proportional to 28,991.27, 43,499.39 and 15,661.61

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Solution

The fourth proportional to 28,991.27, 43,499.39 and 15,661.61 is: 23,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.27 : 43,499.39 = 15,661.61 : x
  2. Step 2: Convert to fraction form
    28,991.27/43,499.39 = 15,661.61/x
  3. Step 3: Cross multiply
    28,991.27x = 43,499.39 × 15,661.61
  4. Step 4: Simplify right side
    28,991.27x = 681,270,185.61
  5. Step 5: Solve for x
    x = 681,270,185.61/28,991.27
  6. Step 6: Final answer
    x = 23,499.15

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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.