Home / 11,514.80-15,890.39-6,479.03

Finding the Fourth Proportional to 11,514.80, 15,890.39 and 6,479.03

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Solution

The fourth proportional to 11,514.80, 15,890.39 and 6,479.03 is: 8,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.80 : 15,890.39 = 6,479.03 : x
  2. Step 2: Convert to fraction form
    11,514.80/15,890.39 = 6,479.03/x
  3. Step 3: Cross multiply
    11,514.80x = 15,890.39 × 6,479.03
  4. Step 4: Simplify right side
    11,514.80x = 102,954,336.90
  5. Step 5: Solve for x
    x = 102,954,336.90/11,514.80
  6. Step 6: Final answer
    x = 8,941.04

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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.