Home / 11,815.80-17,685.30-9,204.60

Finding the Fourth Proportional to 11,815.80, 17,685.30 and 9,204.60

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Solution

The fourth proportional to 11,815.80, 17,685.30 and 9,204.60 is: 13,776.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.80 : 17,685.30 = 9,204.60 : x
  2. Step 2: Convert to fraction form
    11,815.80/17,685.30 = 9,204.60/x
  3. Step 3: Cross multiply
    11,815.80x = 17,685.30 × 9,204.60
  4. Step 4: Simplify right side
    11,815.80x = 162,786,112.38
  5. Step 5: Solve for x
    x = 162,786,112.38/11,815.80
  6. Step 6: Final answer
    x = 13,776.99

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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.