Home / 13,770.41-20,655.59-3,909.79

Finding the Fourth Proportional to 13,770.41, 20,655.59 and 3,909.79

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Solution

The fourth proportional to 13,770.41, 20,655.59 and 3,909.79 is: 5,864.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.41 : 20,655.59 = 3,909.79 : x
  2. Step 2: Convert to fraction form
    13,770.41/20,655.59 = 3,909.79/x
  3. Step 3: Cross multiply
    13,770.41x = 20,655.59 × 3,909.79
  4. Step 4: Simplify right side
    13,770.41x = 80,758,915.95
  5. Step 5: Solve for x
    x = 80,758,915.95/13,770.41
  6. Step 6: Final answer
    x = 5,864.67

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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.