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Finding the Fourth Proportional to 20,349.60, 30,524.40 and 18,794.40

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Solution

The fourth proportional to 20,349.60, 30,524.40 and 18,794.40 is: 28,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.60 : 30,524.40 = 18,794.40 : x
  2. Step 2: Convert to fraction form
    20,349.60/30,524.40 = 18,794.40/x
  3. Step 3: Cross multiply
    20,349.60x = 30,524.40 × 18,794.40
  4. Step 4: Simplify right side
    20,349.60x = 573,687,783.36
  5. Step 5: Solve for x
    x = 573,687,783.36/20,349.60
  6. Step 6: Final answer
    x = 28,191.60

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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.