Home / 11,286.36-15,558.88-7,918.68

Finding the Fourth Proportional to 11,286.36, 15,558.88 and 7,918.68

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Solution

The fourth proportional to 11,286.36, 15,558.88 and 7,918.68 is: 10,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,286.36 : 15,558.88 = 7,918.68 : x
  2. Step 2: Convert to fraction form
    11,286.36/15,558.88 = 7,918.68/x
  3. Step 3: Cross multiply
    11,286.36x = 15,558.88 × 7,918.68
  4. Step 4: Simplify right side
    11,286.36x = 123,205,791.88
  5. Step 5: Solve for x
    x = 123,205,791.88/11,286.36
  6. Step 6: Final answer
    x = 10,916.34

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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.