Home / 20,629.40-30,939.14-9,525.42

Finding the Fourth Proportional to 20,629.40, 30,939.14 and 9,525.42

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Solution

The fourth proportional to 20,629.40, 30,939.14 and 9,525.42 is: 14,285.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.40 : 30,939.14 = 9,525.42 : x
  2. Step 2: Convert to fraction form
    20,629.40/30,939.14 = 9,525.42/x
  3. Step 3: Cross multiply
    20,629.40x = 30,939.14 × 9,525.42
  4. Step 4: Simplify right side
    20,629.40x = 294,708,100.62
  5. Step 5: Solve for x
    x = 294,708,100.62/20,629.40
  6. Step 6: Final answer
    x = 14,285.83

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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.