Home / 11,504.89-15,837.57-8,515.09

Finding the Fourth Proportional to 11,504.89, 15,837.57 and 8,515.09

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Solution

The fourth proportional to 11,504.89, 15,837.57 and 8,515.09 is: 11,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,504.89 : 15,837.57 = 8,515.09 : x
  2. Step 2: Convert to fraction form
    11,504.89/15,837.57 = 8,515.09/x
  3. Step 3: Cross multiply
    11,504.89x = 15,837.57 × 8,515.09
  4. Step 4: Simplify right side
    11,504.89x = 134,858,333.93
  5. Step 5: Solve for x
    x = 134,858,333.93/11,504.89
  6. Step 6: Final answer
    x = 11,721.83

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1.5x scale

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.