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Finding the Fourth Proportional to 20,168.60, 30,223.20 and 14,633.60

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Solution

The fourth proportional to 20,168.60, 30,223.20 and 14,633.60 is: 21,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.60 : 30,223.20 = 14,633.60 : x
  2. Step 2: Convert to fraction form
    20,168.60/30,223.20 = 14,633.60/x
  3. Step 3: Cross multiply
    20,168.60x = 30,223.20 × 14,633.60
  4. Step 4: Simplify right side
    20,168.60x = 442,274,219.52
  5. Step 5: Solve for x
    x = 442,274,219.52/20,168.60
  6. Step 6: Final answer
    x = 21,928.85

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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.