Home / 20,405.38-30,604.48-5,610.73

Finding the Fourth Proportional to 20,405.38, 30,604.48 and 5,610.73

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Solution

The fourth proportional to 20,405.38, 30,604.48 and 5,610.73 is: 8,415.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.38 : 30,604.48 = 5,610.73 : x
  2. Step 2: Convert to fraction form
    20,405.38/30,604.48 = 5,610.73/x
  3. Step 3: Cross multiply
    20,405.38x = 30,604.48 × 5,610.73
  4. Step 4: Simplify right side
    20,405.38x = 171,713,474.07
  5. Step 5: Solve for x
    x = 171,713,474.07/20,405.38
  6. Step 6: Final answer
    x = 8,415.11

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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.