Home / 20,190.70-30,286.05-15,784.30

Finding the Fourth Proportional to 20,190.70, 30,286.05 and 15,784.30

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Solution

The fourth proportional to 20,190.70, 30,286.05 and 15,784.30 is: 23,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.70 : 30,286.05 = 15,784.30 : x
  2. Step 2: Convert to fraction form
    20,190.70/30,286.05 = 15,784.30/x
  3. Step 3: Cross multiply
    20,190.70x = 30,286.05 × 15,784.30
  4. Step 4: Simplify right side
    20,190.70x = 478,044,099.02
  5. Step 5: Solve for x
    x = 478,044,099.02/20,190.70
  6. Step 6: Final answer
    x = 23,676.45

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Similar ratio
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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.