Home / 20,622.28-30,893.56-12,308.92

Finding the Fourth Proportional to 20,622.28, 30,893.56 and 12,308.92

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Solution

The fourth proportional to 20,622.28, 30,893.56 and 12,308.92 is: 18,439.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.28 : 30,893.56 = 12,308.92 : x
  2. Step 2: Convert to fraction form
    20,622.28/30,893.56 = 12,308.92/x
  3. Step 3: Cross multiply
    20,622.28x = 30,893.56 × 12,308.92
  4. Step 4: Simplify right side
    20,622.28x = 380,266,358.56
  5. Step 5: Solve for x
    x = 380,266,358.56/20,622.28
  6. Step 6: Final answer
    x = 18,439.59

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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.