Home / 18,910.80-28,378.96-14,234.27

Finding the Fourth Proportional to 18,910.80, 28,378.96 and 14,234.27

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Solution

The fourth proportional to 18,910.80, 28,378.96 and 14,234.27 is: 21,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.80 : 28,378.96 = 14,234.27 : x
  2. Step 2: Convert to fraction form
    18,910.80/28,378.96 = 14,234.27/x
  3. Step 3: Cross multiply
    18,910.80x = 28,378.96 × 14,234.27
  4. Step 4: Simplify right side
    18,910.80x = 403,953,778.96
  5. Step 5: Solve for x
    x = 403,953,778.96/18,910.80
  6. Step 6: Final answer
    x = 21,361.01

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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.