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Finding the Fourth Proportional to 29,195.80, 43,728.90 and 18,698.20

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Solution

The fourth proportional to 29,195.80, 43,728.90 and 18,698.20 is: 28,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,195.80 : 43,728.90 = 18,698.20 : x
  2. Step 2: Convert to fraction form
    29,195.80/43,728.90 = 18,698.20/x
  3. Step 3: Cross multiply
    29,195.80x = 43,728.90 × 18,698.20
  4. Step 4: Simplify right side
    29,195.80x = 817,651,717.98
  5. Step 5: Solve for x
    x = 817,651,717.98/29,195.80
  6. Step 6: Final answer
    x = 28,005.80

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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.