Home / 13,339.20-20,012.04-3,979.14

Finding the Fourth Proportional to 13,339.20, 20,012.04 and 3,979.14

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Solution

The fourth proportional to 13,339.20, 20,012.04 and 3,979.14 is: 5,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.20 : 20,012.04 = 3,979.14 : x
  2. Step 2: Convert to fraction form
    13,339.20/20,012.04 = 3,979.14/x
  3. Step 3: Cross multiply
    13,339.20x = 20,012.04 × 3,979.14
  4. Step 4: Simplify right side
    13,339.20x = 79,630,708.85
  5. Step 5: Solve for x
    x = 79,630,708.85/13,339.20
  6. Step 6: Final answer
    x = 5,969.68

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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.