Home / 11,040.33-15,237.36-7,815.09

Finding the Fourth Proportional to 11,040.33, 15,237.36 and 7,815.09

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Solution

The fourth proportional to 11,040.33, 15,237.36 and 7,815.09 is: 10,786.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,040.33 : 15,237.36 = 7,815.09 : x
  2. Step 2: Convert to fraction form
    11,040.33/15,237.36 = 7,815.09/x
  3. Step 3: Cross multiply
    11,040.33x = 15,237.36 × 7,815.09
  4. Step 4: Simplify right side
    11,040.33x = 119,081,339.76
  5. Step 5: Solve for x
    x = 119,081,339.76/11,040.33
  6. Step 6: Final answer
    x = 10,786.03

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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.