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Finding the Fourth Proportional to 20,150.60, 30,225.90 and 14,245.70

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Solution

The fourth proportional to 20,150.60, 30,225.90 and 14,245.70 is: 21,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.60 : 30,225.90 = 14,245.70 : x
  2. Step 2: Convert to fraction form
    20,150.60/30,225.90 = 14,245.70/x
  3. Step 3: Cross multiply
    20,150.60x = 30,225.90 × 14,245.70
  4. Step 4: Simplify right side
    20,150.60x = 430,589,103.63
  5. Step 5: Solve for x
    x = 430,589,103.63/20,150.60
  6. Step 6: Final answer
    x = 21,368.55

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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.