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Finding the Fourth Proportional to 19,074.78, 28,573.29 and 7,976.97

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Solution

The fourth proportional to 19,074.78, 28,573.29 and 7,976.97 is: 11,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,074.78 : 28,573.29 = 7,976.97 : x
  2. Step 2: Convert to fraction form
    19,074.78/28,573.29 = 7,976.97/x
  3. Step 3: Cross multiply
    19,074.78x = 28,573.29 × 7,976.97
  4. Step 4: Simplify right side
    19,074.78x = 227,928,277.13
  5. Step 5: Solve for x
    x = 227,928,277.13/19,074.78
  6. Step 6: Final answer
    x = 11,949.20

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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.