Home / 13,766.80-20,649.12-3,905.32

Finding the Fourth Proportional to 13,766.80, 20,649.12 and 3,905.32

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Solution

The fourth proportional to 13,766.80, 20,649.12 and 3,905.32 is: 5,857.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.80 : 20,649.12 = 3,905.32 : x
  2. Step 2: Convert to fraction form
    13,766.80/20,649.12 = 3,905.32/x
  3. Step 3: Cross multiply
    13,766.80x = 20,649.12 × 3,905.32
  4. Step 4: Simplify right side
    13,766.80x = 80,641,421.32
  5. Step 5: Solve for x
    x = 80,641,421.32/13,766.80
  6. Step 6: Final answer
    x = 5,857.67

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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.