Home / 13,790.18-20,672.40-5,468.60

Finding the Fourth Proportional to 13,790.18, 20,672.40 and 5,468.60

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Solution

The fourth proportional to 13,790.18, 20,672.40 and 5,468.60 is: 8,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.18 : 20,672.40 = 5,468.60 : x
  2. Step 2: Convert to fraction form
    13,790.18/20,672.40 = 5,468.60/x
  3. Step 3: Cross multiply
    13,790.18x = 20,672.40 × 5,468.60
  4. Step 4: Simplify right side
    13,790.18x = 113,049,086.64
  5. Step 5: Solve for x
    x = 113,049,086.64/13,790.18
  6. Step 6: Final answer
    x = 8,197.80

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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.