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Finding the Fourth Proportional to 20,566.20, 30,863.70 and 8,887.80

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Solution

The fourth proportional to 20,566.20, 30,863.70 and 8,887.80 is: 13,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.20 : 30,863.70 = 8,887.80 : x
  2. Step 2: Convert to fraction form
    20,566.20/30,863.70 = 8,887.80/x
  3. Step 3: Cross multiply
    20,566.20x = 30,863.70 × 8,887.80
  4. Step 4: Simplify right side
    20,566.20x = 274,310,392.86
  5. Step 5: Solve for x
    x = 274,310,392.86/20,566.20
  6. Step 6: Final answer
    x = 13,337.92

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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.