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Finding the Fourth Proportional to 36,221.80, 54,342.30 and 12,845.80

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Solution

The fourth proportional to 36,221.80, 54,342.30 and 12,845.80 is: 19,272.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,221.80 : 54,342.30 = 12,845.80 : x
  2. Step 2: Convert to fraction form
    36,221.80/54,342.30 = 12,845.80/x
  3. Step 3: Cross multiply
    36,221.80x = 54,342.30 × 12,845.80
  4. Step 4: Simplify right side
    36,221.80x = 698,070,317.34
  5. Step 5: Solve for x
    x = 698,070,317.34/36,221.80
  6. Step 6: Final answer
    x = 19,272.10

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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.