Home / 20,149.21-30,234.48-14,647.96

Finding the Fourth Proportional to 20,149.21, 30,234.48 and 14,647.96

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Solution

The fourth proportional to 20,149.21, 30,234.48 and 14,647.96 is: 21,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.21 : 30,234.48 = 14,647.96 : x
  2. Step 2: Convert to fraction form
    20,149.21/30,234.48 = 14,647.96/x
  3. Step 3: Cross multiply
    20,149.21x = 30,234.48 × 14,647.96
  4. Step 4: Simplify right side
    20,149.21x = 442,873,453.66
  5. Step 5: Solve for x
    x = 442,873,453.66/20,149.21
  6. Step 6: Final answer
    x = 21,979.69

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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.