Home / 20,539.44-30,815.76-14,240.88

Finding the Fourth Proportional to 20,539.44, 30,815.76 and 14,240.88

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Solution

The fourth proportional to 20,539.44, 30,815.76 and 14,240.88 is: 21,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.44 : 30,815.76 = 14,240.88 : x
  2. Step 2: Convert to fraction form
    20,539.44/30,815.76 = 14,240.88/x
  3. Step 3: Cross multiply
    20,539.44x = 30,815.76 × 14,240.88
  4. Step 4: Simplify right side
    20,539.44x = 438,843,540.27
  5. Step 5: Solve for x
    x = 438,843,540.27/20,539.44
  6. Step 6: Final answer
    x = 21,365.90

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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.