Home / 11,516.64-17,279.28-4,120.80

Finding the Fourth Proportional to 11,516.64, 17,279.28 and 4,120.80

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Solution

The fourth proportional to 11,516.64, 17,279.28 and 4,120.80 is: 6,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,516.64 : 17,279.28 = 4,120.80 : x
  2. Step 2: Convert to fraction form
    11,516.64/17,279.28 = 4,120.80/x
  3. Step 3: Cross multiply
    11,516.64x = 17,279.28 × 4,120.80
  4. Step 4: Simplify right side
    11,516.64x = 71,204,457.02
  5. Step 5: Solve for x
    x = 71,204,457.02/11,516.64
  6. Step 6: Final answer
    x = 6,182.75

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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.