Home / 20,128.24-30,202.26-9,042.76

Finding the Fourth Proportional to 20,128.24, 30,202.26 and 9,042.76

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Solution

The fourth proportional to 20,128.24, 30,202.26 and 9,042.76 is: 13,568.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.24 : 30,202.26 = 9,042.76 : x
  2. Step 2: Convert to fraction form
    20,128.24/30,202.26 = 9,042.76/x
  3. Step 3: Cross multiply
    20,128.24x = 30,202.26 × 9,042.76
  4. Step 4: Simplify right side
    20,128.24x = 273,111,788.64
  5. Step 5: Solve for x
    x = 273,111,788.64/20,128.24
  6. Step 6: Final answer
    x = 13,568.59

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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.