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Finding the Fourth Proportional to 12,283.56, 16,950.78 and 6,979.68

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Solution

The fourth proportional to 12,283.56, 16,950.78 and 6,979.68 is: 9,631.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.56 : 16,950.78 = 6,979.68 : x
  2. Step 2: Convert to fraction form
    12,283.56/16,950.78 = 6,979.68/x
  3. Step 3: Cross multiply
    12,283.56x = 16,950.78 × 6,979.68
  4. Step 4: Simplify right side
    12,283.56x = 118,311,020.15
  5. Step 5: Solve for x
    x = 118,311,020.15/12,283.56
  6. Step 6: Final answer
    x = 9,631.66

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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.