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Finding the Fourth Proportional to 19,250.40, 28,843.20 and 15,945.60

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Solution

The fourth proportional to 19,250.40, 28,843.20 and 15,945.60 is: 23,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,250.40 : 28,843.20 = 15,945.60 : x
  2. Step 2: Convert to fraction form
    19,250.40/28,843.20 = 15,945.60/x
  3. Step 3: Cross multiply
    19,250.40x = 28,843.20 × 15,945.60
  4. Step 4: Simplify right side
    19,250.40x = 459,922,129.92
  5. Step 5: Solve for x
    x = 459,922,129.92/19,250.40
  6. Step 6: Final answer
    x = 23,891.56

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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.