Home / 11,209.40-16,817.70-7,515.80

Finding the Fourth Proportional to 11,209.40, 16,817.70 and 7,515.80

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Solution

The fourth proportional to 11,209.40, 16,817.70 and 7,515.80 is: 11,276.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.40 : 16,817.70 = 7,515.80 : x
  2. Step 2: Convert to fraction form
    11,209.40/16,817.70 = 7,515.80/x
  3. Step 3: Cross multiply
    11,209.40x = 16,817.70 × 7,515.80
  4. Step 4: Simplify right side
    11,209.40x = 126,398,469.66
  5. Step 5: Solve for x
    x = 126,398,469.66/11,209.40
  6. Step 6: Final answer
    x = 11,276.11

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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.