Home / 11,405.16-15,732.90-8,255.88

Finding the Fourth Proportional to 11,405.16, 15,732.90 and 8,255.88

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Solution

The fourth proportional to 11,405.16, 15,732.90 and 8,255.88 is: 11,388.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.16 : 15,732.90 = 8,255.88 : x
  2. Step 2: Convert to fraction form
    11,405.16/15,732.90 = 8,255.88/x
  3. Step 3: Cross multiply
    11,405.16x = 15,732.90 × 8,255.88
  4. Step 4: Simplify right side
    11,405.16x = 129,888,934.45
  5. Step 5: Solve for x
    x = 129,888,934.45/11,405.16
  6. Step 6: Final answer
    x = 11,388.61

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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.