Home / 20,539.98-28,319.49-17,141.88

Finding the Fourth Proportional to 20,539.98, 28,319.49 and 17,141.88

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Solution

The fourth proportional to 20,539.98, 28,319.49 and 17,141.88 is: 23,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.98 : 28,319.49 = 17,141.88 : x
  2. Step 2: Convert to fraction form
    20,539.98/28,319.49 = 17,141.88/x
  3. Step 3: Cross multiply
    20,539.98x = 28,319.49 × 17,141.88
  4. Step 4: Simplify right side
    20,539.98x = 485,449,469.72
  5. Step 5: Solve for x
    x = 485,449,469.72/20,539.98
  6. Step 6: Final answer
    x = 23,634.36

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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.