Home / 18,716.99-25,839.95-12,982.79

Finding the Fourth Proportional to 18,716.99, 25,839.95 and 12,982.79

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Solution

The fourth proportional to 18,716.99, 25,839.95 and 12,982.79 is: 17,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.99 : 25,839.95 = 12,982.79 : x
  2. Step 2: Convert to fraction form
    18,716.99/25,839.95 = 12,982.79/x
  3. Step 3: Cross multiply
    18,716.99x = 25,839.95 × 12,982.79
  4. Step 4: Simplify right side
    18,716.99x = 335,474,644.15
  5. Step 5: Solve for x
    x = 335,474,644.15/18,716.99
  6. Step 6: Final answer
    x = 17,923.54

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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.