Home / 13,770.25-20,655.32-3,909.53

Finding the Fourth Proportional to 13,770.25, 20,655.32 and 3,909.53

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Solution

The fourth proportional to 13,770.25, 20,655.32 and 3,909.53 is: 5,864.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.25 : 20,655.32 = 3,909.53 : x
  2. Step 2: Convert to fraction form
    13,770.25/20,655.32 = 3,909.53/x
  3. Step 3: Cross multiply
    13,770.25x = 20,655.32 × 3,909.53
  4. Step 4: Simplify right side
    13,770.25x = 80,752,597.39
  5. Step 5: Solve for x
    x = 80,752,597.39/13,770.25
  6. Step 6: Final answer
    x = 5,864.28

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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.