Home / 13,481.20-20,216.40-4,711.60

Finding the Fourth Proportional to 13,481.20, 20,216.40 and 4,711.60

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Solution

The fourth proportional to 13,481.20, 20,216.40 and 4,711.60 is: 7,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.20 : 20,216.40 = 4,711.60 : x
  2. Step 2: Convert to fraction form
    13,481.20/20,216.40 = 4,711.60/x
  3. Step 3: Cross multiply
    13,481.20x = 20,216.40 × 4,711.60
  4. Step 4: Simplify right side
    13,481.20x = 95,251,590.24
  5. Step 5: Solve for x
    x = 95,251,590.24/13,481.20
  6. Step 6: Final answer
    x = 7,065.51

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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.