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Finding the Fourth Proportional to 20,552.60, 30,807.78 and 8,855.96

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Solution

The fourth proportional to 20,552.60, 30,807.78 and 8,855.96 is: 13,274.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.60 : 30,807.78 = 8,855.96 : x
  2. Step 2: Convert to fraction form
    20,552.60/30,807.78 = 8,855.96/x
  3. Step 3: Cross multiply
    20,552.60x = 30,807.78 × 8,855.96
  4. Step 4: Simplify right side
    20,552.60x = 272,832,467.37
  5. Step 5: Solve for x
    x = 272,832,467.37/20,552.60
  6. Step 6: Final answer
    x = 13,274.84

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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.