Home / 20,255.60-30,383.20-6,404.60

Finding the Fourth Proportional to 20,255.60, 30,383.20 and 6,404.60

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Solution

The fourth proportional to 20,255.60, 30,383.20 and 6,404.60 is: 9,606.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.60 : 30,383.20 = 6,404.60 : x
  2. Step 2: Convert to fraction form
    20,255.60/30,383.20 = 6,404.60/x
  3. Step 3: Cross multiply
    20,255.60x = 30,383.20 × 6,404.60
  4. Step 4: Simplify right side
    20,255.60x = 194,592,242.72
  5. Step 5: Solve for x
    x = 194,592,242.72/20,255.60
  6. Step 6: Final answer
    x = 9,606.84

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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.