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Finding the Fourth Proportional to 28,481.88, 39,274.80 and 19,542.44

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Solution

The fourth proportional to 28,481.88, 39,274.80 and 19,542.44 is: 26,947.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,481.88 : 39,274.80 = 19,542.44 : x
  2. Step 2: Convert to fraction form
    28,481.88/39,274.80 = 19,542.44/x
  3. Step 3: Cross multiply
    28,481.88x = 39,274.80 × 19,542.44
  4. Step 4: Simplify right side
    28,481.88x = 767,525,422.51
  5. Step 5: Solve for x
    x = 767,525,422.51/28,481.88
  6. Step 6: Final answer
    x = 26,947.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.