Home / 12,956.28-17,879.46-7,213.68

Finding the Fourth Proportional to 12,956.28, 17,879.46 and 7,213.68

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Solution

The fourth proportional to 12,956.28, 17,879.46 and 7,213.68 is: 9,954.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,956.28 : 17,879.46 = 7,213.68 : x
  2. Step 2: Convert to fraction form
    12,956.28/17,879.46 = 7,213.68/x
  3. Step 3: Cross multiply
    12,956.28x = 17,879.46 × 7,213.68
  4. Step 4: Simplify right side
    12,956.28x = 128,976,703.01
  5. Step 5: Solve for x
    x = 128,976,703.01/12,956.28
  6. Step 6: Final answer
    x = 9,954.76

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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.