Home / 20,206.40-30,309.60-5,414.95

Finding the Fourth Proportional to 20,206.40, 30,309.60 and 5,414.95

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Solution

The fourth proportional to 20,206.40, 30,309.60 and 5,414.95 is: 8,122.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.40 : 30,309.60 = 5,414.95 : x
  2. Step 2: Convert to fraction form
    20,206.40/30,309.60 = 5,414.95/x
  3. Step 3: Cross multiply
    20,206.40x = 30,309.60 × 5,414.95
  4. Step 4: Simplify right side
    20,206.40x = 164,124,816.97
  5. Step 5: Solve for x
    x = 164,124,816.97/20,206.40
  6. Step 6: Final answer
    x = 8,122.42

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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.