Home / 13,711.94-20,562.11-5,390.64

Finding the Fourth Proportional to 13,711.94, 20,562.11 and 5,390.64

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Solution

The fourth proportional to 13,711.94, 20,562.11 and 5,390.64 is: 8,083.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.94 : 20,562.11 = 5,390.64 : x
  2. Step 2: Convert to fraction form
    13,711.94/20,562.11 = 5,390.64/x
  3. Step 3: Cross multiply
    13,711.94x = 20,562.11 × 5,390.64
  4. Step 4: Simplify right side
    13,711.94x = 110,842,905.70
  5. Step 5: Solve for x
    x = 110,842,905.70/13,711.94
  6. Step 6: Final answer
    x = 8,083.68

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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.