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Finding the Fourth Proportional to 29,170.80, 43,777.80 and 21,394.80

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Solution

The fourth proportional to 29,170.80, 43,777.80 and 21,394.80 is: 32,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,170.80 : 43,777.80 = 21,394.80 : x
  2. Step 2: Convert to fraction form
    29,170.80/43,777.80 = 21,394.80/x
  3. Step 3: Cross multiply
    29,170.80x = 43,777.80 × 21,394.80
  4. Step 4: Simplify right side
    29,170.80x = 936,617,275.44
  5. Step 5: Solve for x
    x = 936,617,275.44/29,170.80
  6. Step 6: Final answer
    x = 32,108.04

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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.