Home / 11,163.20-15,406.16-7,181.84

Finding the Fourth Proportional to 11,163.20, 15,406.16 and 7,181.84

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Solution

The fourth proportional to 11,163.20, 15,406.16 and 7,181.84 is: 9,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.20 : 15,406.16 = 7,181.84 : x
  2. Step 2: Convert to fraction form
    11,163.20/15,406.16 = 7,181.84/x
  3. Step 3: Cross multiply
    11,163.20x = 15,406.16 × 7,181.84
  4. Step 4: Simplify right side
    11,163.20x = 110,644,576.13
  5. Step 5: Solve for x
    x = 110,644,576.13/11,163.20
  6. Step 6: Final answer
    x = 9,911.55

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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.