Home / 20,128.38-30,198.57-9,606.30

Finding the Fourth Proportional to 20,128.38, 30,198.57 and 9,606.30

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Solution

The fourth proportional to 20,128.38, 30,198.57 and 9,606.30 is: 14,412.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.38 : 30,198.57 = 9,606.30 : x
  2. Step 2: Convert to fraction form
    20,128.38/30,198.57 = 9,606.30/x
  3. Step 3: Cross multiply
    20,128.38x = 30,198.57 × 9,606.30
  4. Step 4: Simplify right side
    20,128.38x = 290,096,522.99
  5. Step 5: Solve for x
    x = 290,096,522.99/20,128.38
  6. Step 6: Final answer
    x = 14,412.31

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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.