Home / 20,139.44-30,219.38-9,043.85

Finding the Fourth Proportional to 20,139.44, 30,219.38 and 9,043.85

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Solution

The fourth proportional to 20,139.44, 30,219.38 and 9,043.85 is: 13,570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.44 : 30,219.38 = 9,043.85 : x
  2. Step 2: Convert to fraction form
    20,139.44/30,219.38 = 9,043.85/x
  3. Step 3: Cross multiply
    20,139.44x = 30,219.38 × 9,043.85
  4. Step 4: Simplify right side
    20,139.44x = 273,299,604.06
  5. Step 5: Solve for x
    x = 273,299,604.06/20,139.44
  6. Step 6: Final answer
    x = 13,570.37

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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.