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Finding the Fourth Proportional to 31,797.98, 43,883.28 and 18,369.80

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Solution

The fourth proportional to 31,797.98, 43,883.28 and 18,369.80 is: 25,351.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,797.98 : 43,883.28 = 18,369.80 : x
  2. Step 2: Convert to fraction form
    31,797.98/43,883.28 = 18,369.80/x
  3. Step 3: Cross multiply
    31,797.98x = 43,883.28 × 18,369.80
  4. Step 4: Simplify right side
    31,797.98x = 806,126,857.53
  5. Step 5: Solve for x
    x = 806,126,857.53/31,797.98
  6. Step 6: Final answer
    x = 25,351.52

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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.