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Finding the Fourth Proportional to 29,112.40, 43,630.80 and 13,496.80

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Solution

The fourth proportional to 29,112.40, 43,630.80 and 13,496.80 is: 20,227.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,112.40 : 43,630.80 = 13,496.80 : x
  2. Step 2: Convert to fraction form
    29,112.40/43,630.80 = 13,496.80/x
  3. Step 3: Cross multiply
    29,112.40x = 43,630.80 × 13,496.80
  4. Step 4: Simplify right side
    29,112.40x = 588,876,181.44
  5. Step 5: Solve for x
    x = 588,876,181.44/29,112.40
  6. Step 6: Final answer
    x = 20,227.68

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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.