Home / 12,976.43-17,908.13-7,939.08

Finding the Fourth Proportional to 12,976.43, 17,908.13 and 7,939.08

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Solution

The fourth proportional to 12,976.43, 17,908.13 and 7,939.08 is: 10,956.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.43 : 17,908.13 = 7,939.08 : x
  2. Step 2: Convert to fraction form
    12,976.43/17,908.13 = 7,939.08/x
  3. Step 3: Cross multiply
    12,976.43x = 17,908.13 × 7,939.08
  4. Step 4: Simplify right side
    12,976.43x = 142,174,096.57
  5. Step 5: Solve for x
    x = 142,174,096.57/12,976.43
  6. Step 6: Final answer
    x = 10,956.33

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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.