Home / 11,925.89-16,458.22-6,620.70

Finding the Fourth Proportional to 11,925.89, 16,458.22 and 6,620.70

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Solution

The fourth proportional to 11,925.89, 16,458.22 and 6,620.70 is: 9,136.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.89 : 16,458.22 = 6,620.70 : x
  2. Step 2: Convert to fraction form
    11,925.89/16,458.22 = 6,620.70/x
  3. Step 3: Cross multiply
    11,925.89x = 16,458.22 × 6,620.70
  4. Step 4: Simplify right side
    11,925.89x = 108,965,007.15
  5. Step 5: Solve for x
    x = 108,965,007.15/11,925.89
  6. Step 6: Final answer
    x = 9,136.85

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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.