Home / 10,691.92-16,037.88-4,121.20

Finding the Fourth Proportional to 10,691.92, 16,037.88 and 4,121.20

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Solution

The fourth proportional to 10,691.92, 16,037.88 and 4,121.20 is: 6,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.92 : 16,037.88 = 4,121.20 : x
  2. Step 2: Convert to fraction form
    10,691.92/16,037.88 = 4,121.20/x
  3. Step 3: Cross multiply
    10,691.92x = 16,037.88 × 4,121.20
  4. Step 4: Simplify right side
    10,691.92x = 66,095,311.06
  5. Step 5: Solve for x
    x = 66,095,311.06/10,691.92
  6. Step 6: Final answer
    x = 6,181.80

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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.