Home / 11,789.28-17,685.28-3,998.72

Finding the Fourth Proportional to 11,789.28, 17,685.28 and 3,998.72

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Solution

The fourth proportional to 11,789.28, 17,685.28 and 3,998.72 is: 5,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,789.28 : 17,685.28 = 3,998.72 : x
  2. Step 2: Convert to fraction form
    11,789.28/17,685.28 = 3,998.72/x
  3. Step 3: Cross multiply
    11,789.28x = 17,685.28 × 3,998.72
  4. Step 4: Simplify right side
    11,789.28x = 70,718,482.84
  5. Step 5: Solve for x
    x = 70,718,482.84/11,789.28
  6. Step 6: Final answer
    x = 5,998.54

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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.