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Finding the Fourth Proportional to 29,054.80, 40,104.21 and 17,121.98

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Solution

The fourth proportional to 29,054.80, 40,104.21 and 17,121.98 is: 23,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,054.80 : 40,104.21 = 17,121.98 : x
  2. Step 2: Convert to fraction form
    29,054.80/40,104.21 = 17,121.98/x
  3. Step 3: Cross multiply
    29,054.80x = 40,104.21 × 17,121.98
  4. Step 4: Simplify right side
    29,054.80x = 686,663,481.54
  5. Step 5: Solve for x
    x = 686,663,481.54/29,054.80
  6. Step 6: Final answer
    x = 23,633.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.