Home / 21,883.40-30,199.21-12,451.96

Finding the Fourth Proportional to 21,883.40, 30,199.21 and 12,451.96

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Solution

The fourth proportional to 21,883.40, 30,199.21 and 12,451.96 is: 17,183.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.40 : 30,199.21 = 12,451.96 : x
  2. Step 2: Convert to fraction form
    21,883.40/30,199.21 = 12,451.96/x
  3. Step 3: Cross multiply
    21,883.40x = 30,199.21 × 12,451.96
  4. Step 4: Simplify right side
    21,883.40x = 376,039,354.95
  5. Step 5: Solve for x
    x = 376,039,354.95/21,883.40
  6. Step 6: Final answer
    x = 17,183.77

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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.