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Finding the Fourth Proportional to 12,879.48, 19,277.46 and 6,948.12

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Solution

The fourth proportional to 12,879.48, 19,277.46 and 6,948.12 is: 10,399.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.48 : 19,277.46 = 6,948.12 : x
  2. Step 2: Convert to fraction form
    12,879.48/19,277.46 = 6,948.12/x
  3. Step 3: Cross multiply
    12,879.48x = 19,277.46 × 6,948.12
  4. Step 4: Simplify right side
    12,879.48x = 133,942,105.38
  5. Step 5: Solve for x
    x = 133,942,105.38/12,879.48
  6. Step 6: Final answer
    x = 10,399.65

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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.