Home / 20,125.35-30,190.73-8,435.84

Finding the Fourth Proportional to 20,125.35, 30,190.73 and 8,435.84

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Solution

The fourth proportional to 20,125.35, 30,190.73 and 8,435.84 is: 12,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.35 : 30,190.73 = 8,435.84 : x
  2. Step 2: Convert to fraction form
    20,125.35/30,190.73 = 8,435.84/x
  3. Step 3: Cross multiply
    20,125.35x = 30,190.73 × 8,435.84
  4. Step 4: Simplify right side
    20,125.35x = 254,683,974.63
  5. Step 5: Solve for x
    x = 254,683,974.63/20,125.35
  6. Step 6: Final answer
    x = 12,654.88

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Double scale
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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.