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Finding the Fourth Proportional to 18,535.80, 27,803.70 and 16,231.80

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Solution

The fourth proportional to 18,535.80, 27,803.70 and 16,231.80 is: 24,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,535.80 : 27,803.70 = 16,231.80 : x
  2. Step 2: Convert to fraction form
    18,535.80/27,803.70 = 16,231.80/x
  3. Step 3: Cross multiply
    18,535.80x = 27,803.70 × 16,231.80
  4. Step 4: Simplify right side
    18,535.80x = 451,304,097.66
  5. Step 5: Solve for x
    x = 451,304,097.66/18,535.80
  6. Step 6: Final answer
    x = 24,347.70

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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.