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Finding the Fourth Proportional to 13,419.81, 20,096.78 and 11,065.41

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Solution

The fourth proportional to 13,419.81, 20,096.78 and 11,065.41 is: 16,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.81 : 20,096.78 = 11,065.41 : x
  2. Step 2: Convert to fraction form
    13,419.81/20,096.78 = 11,065.41/x
  3. Step 3: Cross multiply
    13,419.81x = 20,096.78 × 11,065.41
  4. Step 4: Simplify right side
    13,419.81x = 222,379,055.05
  5. Step 5: Solve for x
    x = 222,379,055.05/13,419.81
  6. Step 6: Final answer
    x = 16,570.95

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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.