Home / 20,224.60-30,315.30-7,739.80

Finding the Fourth Proportional to 20,224.60, 30,315.30 and 7,739.80

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Solution

The fourth proportional to 20,224.60, 30,315.30 and 7,739.80 is: 11,601.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.60 : 30,315.30 = 7,739.80 : x
  2. Step 2: Convert to fraction form
    20,224.60/30,315.30 = 7,739.80/x
  3. Step 3: Cross multiply
    20,224.60x = 30,315.30 × 7,739.80
  4. Step 4: Simplify right side
    20,224.60x = 234,634,358.94
  5. Step 5: Solve for x
    x = 234,634,358.94/20,224.60
  6. Step 6: Final answer
    x = 11,601.43

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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.