Home / 12,979.60-17,912.10-7,674.44

Finding the Fourth Proportional to 12,979.60, 17,912.10 and 7,674.44

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Solution

The fourth proportional to 12,979.60, 17,912.10 and 7,674.44 is: 10,590.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.60 : 17,912.10 = 7,674.44 : x
  2. Step 2: Convert to fraction form
    12,979.60/17,912.10 = 7,674.44/x
  3. Step 3: Cross multiply
    12,979.60x = 17,912.10 × 7,674.44
  4. Step 4: Simplify right side
    12,979.60x = 137,465,336.72
  5. Step 5: Solve for x
    x = 137,465,336.72/12,979.60
  6. Step 6: Final answer
    x = 10,590.88

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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.