Home / 20,163.20-30,244.80-6,123.20

Finding the Fourth Proportional to 20,163.20, 30,244.80 and 6,123.20

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Solution

The fourth proportional to 20,163.20, 30,244.80 and 6,123.20 is: 9,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.20 : 30,244.80 = 6,123.20 : x
  2. Step 2: Convert to fraction form
    20,163.20/30,244.80 = 6,123.20/x
  3. Step 3: Cross multiply
    20,163.20x = 30,244.80 × 6,123.20
  4. Step 4: Simplify right side
    20,163.20x = 185,194,959.36
  5. Step 5: Solve for x
    x = 185,194,959.36/20,163.20
  6. Step 6: Final answer
    x = 9,184.80

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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.