Home / 10,245.20-15,362.72-3,318.80

Finding the Fourth Proportional to 10,245.20, 15,362.72 and 3,318.80

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Solution

The fourth proportional to 10,245.20, 15,362.72 and 3,318.80 is: 4,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.20 : 15,362.72 = 3,318.80 : x
  2. Step 2: Convert to fraction form
    10,245.20/15,362.72 = 3,318.80/x
  3. Step 3: Cross multiply
    10,245.20x = 15,362.72 × 3,318.80
  4. Step 4: Simplify right side
    10,245.20x = 50,985,795.14
  5. Step 5: Solve for x
    x = 50,985,795.14/10,245.20
  6. Step 6: Final answer
    x = 4,976.55

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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.