Home / 11,817.39-17,729.13-4,421.90

Finding the Fourth Proportional to 11,817.39, 17,729.13 and 4,421.90

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Solution

The fourth proportional to 11,817.39, 17,729.13 and 4,421.90 is: 6,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.39 : 17,729.13 = 4,421.90 : x
  2. Step 2: Convert to fraction form
    11,817.39/17,729.13 = 4,421.90/x
  3. Step 3: Cross multiply
    11,817.39x = 17,729.13 × 4,421.90
  4. Step 4: Simplify right side
    11,817.39x = 78,396,351.30
  5. Step 5: Solve for x
    x = 78,396,351.30/11,817.39
  6. Step 6: Final answer
    x = 6,633.98

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1.5x scale

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.