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Finding the Fourth Proportional to 20,392.92, 30,587.88 and 5,600.57

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Solution

The fourth proportional to 20,392.92, 30,587.88 and 5,600.57 is: 8,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.92 : 30,587.88 = 5,600.57 : x
  2. Step 2: Convert to fraction form
    20,392.92/30,587.88 = 5,600.57/x
  3. Step 3: Cross multiply
    20,392.92x = 30,587.88 × 5,600.57
  4. Step 4: Simplify right side
    20,392.92x = 171,309,410.15
  5. Step 5: Solve for x
    x = 171,309,410.15/20,392.92
  6. Step 6: Final answer
    x = 8,400.44

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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.