Home / 20,574.20-30,861.30-5,783.60

Finding the Fourth Proportional to 20,574.20, 30,861.30 and 5,783.60

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Solution

The fourth proportional to 20,574.20, 30,861.30 and 5,783.60 is: 8,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.20 : 30,861.30 = 5,783.60 : x
  2. Step 2: Convert to fraction form
    20,574.20/30,861.30 = 5,783.60/x
  3. Step 3: Cross multiply
    20,574.20x = 30,861.30 × 5,783.60
  4. Step 4: Simplify right side
    20,574.20x = 178,489,414.68
  5. Step 5: Solve for x
    x = 178,489,414.68/20,574.20
  6. Step 6: Final answer
    x = 8,675.40

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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.