Home / 11,072.28-15,255.90-8,085

Finding the Fourth Proportional to 11,072.28, 15,255.90 and 8,085

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Solution

The fourth proportional to 11,072.28, 15,255.90 and 8,085 is: 11,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,072.28 : 15,255.90 = 8,085 : x
  2. Step 2: Convert to fraction form
    11,072.28/15,255.90 = 8,085/x
  3. Step 3: Cross multiply
    11,072.28x = 15,255.90 × 8,085
  4. Step 4: Simplify right side
    11,072.28x = 123,343,951.50
  5. Step 5: Solve for x
    x = 123,343,951.50/11,072.28
  6. Step 6: Final answer
    x = 11,139.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.