Home / 13,984.58-20,979.92-8,065.30

Finding the Fourth Proportional to 13,984.58, 20,979.92 and 8,065.30

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Solution

The fourth proportional to 13,984.58, 20,979.92 and 8,065.30 is: 12,099.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.58 : 20,979.92 = 8,065.30 : x
  2. Step 2: Convert to fraction form
    13,984.58/20,979.92 = 8,065.30/x
  3. Step 3: Cross multiply
    13,984.58x = 20,979.92 × 8,065.30
  4. Step 4: Simplify right side
    13,984.58x = 169,209,348.78
  5. Step 5: Solve for x
    x = 169,209,348.78/13,984.58
  6. Step 6: Final answer
    x = 12,099.71

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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.