Home / 11,816.71-17,728.14-4,421.75

Finding the Fourth Proportional to 11,816.71, 17,728.14 and 4,421.75

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Solution

The fourth proportional to 11,816.71, 17,728.14 and 4,421.75 is: 6,633.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.71 : 17,728.14 = 4,421.75 : x
  2. Step 2: Convert to fraction form
    11,816.71/17,728.14 = 4,421.75/x
  3. Step 3: Cross multiply
    11,816.71x = 17,728.14 × 4,421.75
  4. Step 4: Simplify right side
    11,816.71x = 78,389,403.05
  5. Step 5: Solve for x
    x = 78,389,403.05/11,816.71
  6. Step 6: Final answer
    x = 6,633.78

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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.