Home / 11,431.56-17,145.36-8,134.68

Finding the Fourth Proportional to 11,431.56, 17,145.36 and 8,134.68

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Solution

The fourth proportional to 11,431.56, 17,145.36 and 8,134.68 is: 12,200.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.56 : 17,145.36 = 8,134.68 : x
  2. Step 2: Convert to fraction form
    11,431.56/17,145.36 = 8,134.68/x
  3. Step 3: Cross multiply
    11,431.56x = 17,145.36 × 8,134.68
  4. Step 4: Simplify right side
    11,431.56x = 139,472,017.08
  5. Step 5: Solve for x
    x = 139,472,017.08/11,431.56
  6. Step 6: Final answer
    x = 12,200.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.