Home / 20,128.20-30,182.02-11,824.43

Finding the Fourth Proportional to 20,128.20, 30,182.02 and 11,824.43

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Solution

The fourth proportional to 20,128.20, 30,182.02 and 11,824.43 is: 17,730.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.20 : 30,182.02 = 11,824.43 : x
  2. Step 2: Convert to fraction form
    20,128.20/30,182.02 = 11,824.43/x
  3. Step 3: Cross multiply
    20,128.20x = 30,182.02 × 11,824.43
  4. Step 4: Simplify right side
    20,128.20x = 356,885,172.05
  5. Step 5: Solve for x
    x = 356,885,172.05/20,128.20
  6. Step 6: Final answer
    x = 17,730.61

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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.