Home / 11,040.84-15,229.62-7,891.56

Finding the Fourth Proportional to 11,040.84, 15,229.62 and 7,891.56

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Solution

The fourth proportional to 11,040.84, 15,229.62 and 7,891.56 is: 10,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,040.84 : 15,229.62 = 7,891.56 : x
  2. Step 2: Convert to fraction form
    11,040.84/15,229.62 = 7,891.56/x
  3. Step 3: Cross multiply
    11,040.84x = 15,229.62 × 7,891.56
  4. Step 4: Simplify right side
    11,040.84x = 120,185,460.01
  5. Step 5: Solve for x
    x = 120,185,460.01/11,040.84
  6. Step 6: Final answer
    x = 10,885.54

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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.