Home / 18,694.96-25,784.40-11,981.21

Finding the Fourth Proportional to 18,694.96, 25,784.40 and 11,981.21

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Solution

The fourth proportional to 18,694.96, 25,784.40 and 11,981.21 is: 16,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.96 : 25,784.40 = 11,981.21 : x
  2. Step 2: Convert to fraction form
    18,694.96/25,784.40 = 11,981.21/x
  3. Step 3: Cross multiply
    18,694.96x = 25,784.40 × 11,981.21
  4. Step 4: Simplify right side
    18,694.96x = 308,928,311.12
  5. Step 5: Solve for x
    x = 308,928,311.12/18,694.96
  6. Step 6: Final answer
    x = 16,524.68

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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.