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Finding the Fourth Proportional to 36,259.60, 54,405.60 and 12,902.80

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Solution

The fourth proportional to 36,259.60, 54,405.60 and 12,902.80 is: 19,359.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,259.60 : 54,405.60 = 12,902.80 : x
  2. Step 2: Convert to fraction form
    36,259.60/54,405.60 = 12,902.80/x
  3. Step 3: Cross multiply
    36,259.60x = 54,405.60 × 12,902.80
  4. Step 4: Simplify right side
    36,259.60x = 701,984,575.68
  5. Step 5: Solve for x
    x = 701,984,575.68/36,259.60
  6. Step 6: Final answer
    x = 19,359.96

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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.