Home / 11,979.42-17,967.78-3,213.66

Finding the Fourth Proportional to 11,979.42, 17,967.78 and 3,213.66

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Solution

The fourth proportional to 11,979.42, 17,967.78 and 3,213.66 is: 4,820.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.42 : 17,967.78 = 3,213.66 : x
  2. Step 2: Convert to fraction form
    11,979.42/17,967.78 = 3,213.66/x
  3. Step 3: Cross multiply
    11,979.42x = 17,967.78 × 3,213.66
  4. Step 4: Simplify right side
    11,979.42x = 57,742,335.87
  5. Step 5: Solve for x
    x = 57,742,335.87/11,979.42
  6. Step 6: Final answer
    x = 4,820.13

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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.