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Finding the Fourth Proportional to 19,274.88, 28,908 and 11,485.92

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Solution

The fourth proportional to 19,274.88, 28,908 and 11,485.92 is: 17,226.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,274.88 : 28,908 = 11,485.92 : x
  2. Step 2: Convert to fraction form
    19,274.88/28,908 = 11,485.92/x
  3. Step 3: Cross multiply
    19,274.88x = 28,908 × 11,485.92
  4. Step 4: Simplify right side
    19,274.88x = 332,034,975.36
  5. Step 5: Solve for x
    x = 332,034,975.36/19,274.88
  6. Step 6: Final answer
    x = 17,226.31

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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.