Home / 13,711.11-20,568.24-5,390.03

Finding the Fourth Proportional to 13,711.11, 20,568.24 and 5,390.03

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Solution

The fourth proportional to 13,711.11, 20,568.24 and 5,390.03 is: 8,085.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.11 : 20,568.24 = 5,390.03 : x
  2. Step 2: Convert to fraction form
    13,711.11/20,568.24 = 5,390.03/x
  3. Step 3: Cross multiply
    13,711.11x = 20,568.24 × 5,390.03
  4. Step 4: Simplify right side
    13,711.11x = 110,863,327.81
  5. Step 5: Solve for x
    x = 110,863,327.81/13,711.11
  6. Step 6: Final answer
    x = 8,085.66

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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.