Home / 13,770.63-20,656.15-3,909.94

Finding the Fourth Proportional to 13,770.63, 20,656.15 and 3,909.94

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Solution

The fourth proportional to 13,770.63, 20,656.15 and 3,909.94 is: 5,864.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.63 : 20,656.15 = 3,909.94 : x
  2. Step 2: Convert to fraction form
    13,770.63/20,656.15 = 3,909.94/x
  3. Step 3: Cross multiply
    13,770.63x = 20,656.15 × 3,909.94
  4. Step 4: Simplify right side
    13,770.63x = 80,764,245.72
  5. Step 5: Solve for x
    x = 80,764,245.72/13,770.63
  6. Step 6: Final answer
    x = 5,864.96

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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.