Home / 20,192.20-30,288.30-12,829.30

Finding the Fourth Proportional to 20,192.20, 30,288.30 and 12,829.30

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Solution

The fourth proportional to 20,192.20, 30,288.30 and 12,829.30 is: 19,243.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.20 : 30,288.30 = 12,829.30 : x
  2. Step 2: Convert to fraction form
    20,192.20/30,288.30 = 12,829.30/x
  3. Step 3: Cross multiply
    20,192.20x = 30,288.30 × 12,829.30
  4. Step 4: Simplify right side
    20,192.20x = 388,577,687.19
  5. Step 5: Solve for x
    x = 388,577,687.19/20,192.20
  6. Step 6: Final answer
    x = 19,243.95

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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.