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Finding the Fourth Proportional to 29,221.98, 43,819.98 and 18,128.22

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Solution

The fourth proportional to 29,221.98, 43,819.98 and 18,128.22 is: 27,184.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,221.98 : 43,819.98 = 18,128.22 : x
  2. Step 2: Convert to fraction form
    29,221.98/43,819.98 = 18,128.22/x
  3. Step 3: Cross multiply
    29,221.98x = 43,819.98 × 18,128.22
  4. Step 4: Simplify right side
    29,221.98x = 794,378,237.84
  5. Step 5: Solve for x
    x = 794,378,237.84/29,221.98
  6. Step 6: Final answer
    x = 27,184.27

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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.