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Finding the Fourth Proportional to 20,160.20, 30,240.30 and 12,797.30

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Solution

The fourth proportional to 20,160.20, 30,240.30 and 12,797.30 is: 19,195.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.20 : 30,240.30 = 12,797.30 : x
  2. Step 2: Convert to fraction form
    20,160.20/30,240.30 = 12,797.30/x
  3. Step 3: Cross multiply
    20,160.20x = 30,240.30 × 12,797.30
  4. Step 4: Simplify right side
    20,160.20x = 386,994,191.19
  5. Step 5: Solve for x
    x = 386,994,191.19/20,160.20
  6. Step 6: Final answer
    x = 19,195.95

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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.