Home / 13,770.60-20,664-5,451.42

Finding the Fourth Proportional to 13,770.60, 20,664 and 5,451.42

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Solution

The fourth proportional to 13,770.60, 20,664 and 5,451.42 is: 8,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.60 : 20,664 = 5,451.42 : x
  2. Step 2: Convert to fraction form
    13,770.60/20,664 = 5,451.42/x
  3. Step 3: Cross multiply
    13,770.60x = 20,664 × 5,451.42
  4. Step 4: Simplify right side
    13,770.60x = 112,648,142.88
  5. Step 5: Solve for x
    x = 112,648,142.88/13,770.60
  6. Step 6: Final answer
    x = 8,180.34

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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.