Home / 11,979.50-17,954.66-5,403.92

Finding the Fourth Proportional to 11,979.50, 17,954.66 and 5,403.92

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Solution

The fourth proportional to 11,979.50, 17,954.66 and 5,403.92 is: 8,099.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.50 : 17,954.66 = 5,403.92 : x
  2. Step 2: Convert to fraction form
    11,979.50/17,954.66 = 5,403.92/x
  3. Step 3: Cross multiply
    11,979.50x = 17,954.66 × 5,403.92
  4. Step 4: Simplify right side
    11,979.50x = 97,025,470.00
  5. Step 5: Solve for x
    x = 97,025,470.00/11,979.50
  6. Step 6: Final answer
    x = 8,099.30

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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.