Home / 13,367.89-20,040.56-8,426.64

Finding the Fourth Proportional to 13,367.89, 20,040.56 and 8,426.64

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Solution

The fourth proportional to 13,367.89, 20,040.56 and 8,426.64 is: 12,632.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,367.89 : 20,040.56 = 8,426.64 : x
  2. Step 2: Convert to fraction form
    13,367.89/20,040.56 = 8,426.64/x
  3. Step 3: Cross multiply
    13,367.89x = 20,040.56 × 8,426.64
  4. Step 4: Simplify right side
    13,367.89x = 168,874,442.18
  5. Step 5: Solve for x
    x = 168,874,442.18/13,367.89
  6. Step 6: Final answer
    x = 12,632.84

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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.