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Finding the Fourth Proportional to 19,273.94, 28,910.91 and 5,422.94

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Solution

The fourth proportional to 19,273.94, 28,910.91 and 5,422.94 is: 8,134.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,273.94 : 28,910.91 = 5,422.94 : x
  2. Step 2: Convert to fraction form
    19,273.94/28,910.91 = 5,422.94/x
  3. Step 3: Cross multiply
    19,273.94x = 28,910.91 × 5,422.94
  4. Step 4: Simplify right side
    19,273.94x = 156,782,130.28
  5. Step 5: Solve for x
    x = 156,782,130.28/19,273.94
  6. Step 6: Final answer
    x = 8,134.41

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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.