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Finding the Fourth Proportional to 12,231.45, 16,879.47 and 6,927.30

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Solution

The fourth proportional to 12,231.45, 16,879.47 and 6,927.30 is: 9,559.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.45 : 16,879.47 = 6,927.30 : x
  2. Step 2: Convert to fraction form
    12,231.45/16,879.47 = 6,927.30/x
  3. Step 3: Cross multiply
    12,231.45x = 16,879.47 × 6,927.30
  4. Step 4: Simplify right side
    12,231.45x = 116,929,152.53
  5. Step 5: Solve for x
    x = 116,929,152.53/12,231.45
  6. Step 6: Final answer
    x = 9,559.71

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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.