Home / 11,979.38-17,969.37-4,188.20

Finding the Fourth Proportional to 11,979.38, 17,969.37 and 4,188.20

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Solution

The fourth proportional to 11,979.38, 17,969.37 and 4,188.20 is: 6,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.38 : 17,969.37 = 4,188.20 : x
  2. Step 2: Convert to fraction form
    11,979.38/17,969.37 = 4,188.20/x
  3. Step 3: Cross multiply
    11,979.38x = 17,969.37 × 4,188.20
  4. Step 4: Simplify right side
    11,979.38x = 75,259,225.59
  5. Step 5: Solve for x
    x = 75,259,225.59/11,979.38
  6. Step 6: Final answer
    x = 6,282.40

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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.