Home / 12,198.79-18,293.81-5,179.28

Finding the Fourth Proportional to 12,198.79, 18,293.81 and 5,179.28

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Solution

The fourth proportional to 12,198.79, 18,293.81 and 5,179.28 is: 7,767.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.79 : 18,293.81 = 5,179.28 : x
  2. Step 2: Convert to fraction form
    12,198.79/18,293.81 = 5,179.28/x
  3. Step 3: Cross multiply
    12,198.79x = 18,293.81 × 5,179.28
  4. Step 4: Simplify right side
    12,198.79x = 94,748,784.09
  5. Step 5: Solve for x
    x = 94,748,784.09/12,198.79
  6. Step 6: Final answer
    x = 7,767.07

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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.