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Finding the Fourth Proportional to 20,612.52, 30,919.32 and 5,823

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Solution

The fourth proportional to 20,612.52, 30,919.32 and 5,823 is: 8,734.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.52 : 30,919.32 = 5,823 : x
  2. Step 2: Convert to fraction form
    20,612.52/30,919.32 = 5,823/x
  3. Step 3: Cross multiply
    20,612.52x = 30,919.32 × 5,823
  4. Step 4: Simplify right side
    20,612.52x = 180,043,200.36
  5. Step 5: Solve for x
    x = 180,043,200.36/20,612.52
  6. Step 6: Final answer
    x = 8,734.65

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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.