Home / 11,163.22-15,406.16-6,128.42

Finding the Fourth Proportional to 11,163.22, 15,406.16 and 6,128.42

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Solution

The fourth proportional to 11,163.22, 15,406.16 and 6,128.42 is: 8,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.22 : 15,406.16 = 6,128.42 : x
  2. Step 2: Convert to fraction form
    11,163.22/15,406.16 = 6,128.42/x
  3. Step 3: Cross multiply
    11,163.22x = 15,406.16 × 6,128.42
  4. Step 4: Simplify right side
    11,163.22x = 94,415,419.07
  5. Step 5: Solve for x
    x = 94,415,419.07/11,163.22
  6. Step 6: Final answer
    x = 8,457.72

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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.