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Finding the Fourth Proportional to 20,355.24, 30,552.30 and 12,579.24

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Solution

The fourth proportional to 20,355.24, 30,552.30 and 12,579.24 is: 18,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.24 : 30,552.30 = 12,579.24 : x
  2. Step 2: Convert to fraction form
    20,355.24/30,552.30 = 12,579.24/x
  3. Step 3: Cross multiply
    20,355.24x = 30,552.30 × 12,579.24
  4. Step 4: Simplify right side
    20,355.24x = 384,324,714.25
  5. Step 5: Solve for x
    x = 384,324,714.25/20,355.24
  6. Step 6: Final answer
    x = 18,880.87

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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.