Home / 11,292.78-15,578.30-7,511.09

Finding the Fourth Proportional to 11,292.78, 15,578.30 and 7,511.09

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Solution

The fourth proportional to 11,292.78, 15,578.30 and 7,511.09 is: 10,361.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,292.78 : 15,578.30 = 7,511.09 : x
  2. Step 2: Convert to fraction form
    11,292.78/15,578.30 = 7,511.09/x
  3. Step 3: Cross multiply
    11,292.78x = 15,578.30 × 7,511.09
  4. Step 4: Simplify right side
    11,292.78x = 117,010,071.07
  5. Step 5: Solve for x
    x = 117,010,071.07/11,292.78
  6. Step 6: Final answer
    x = 10,361.49

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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.