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Finding the Fourth Proportional to 25,351.80, 38,022.30 and 11,311.80

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Solution

The fourth proportional to 25,351.80, 38,022.30 and 11,311.80 is: 16,965.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,351.80 : 38,022.30 = 11,311.80 : x
  2. Step 2: Convert to fraction form
    25,351.80/38,022.30 = 11,311.80/x
  3. Step 3: Cross multiply
    25,351.80x = 38,022.30 × 11,311.80
  4. Step 4: Simplify right side
    25,351.80x = 430,100,653.14
  5. Step 5: Solve for x
    x = 430,100,653.14/25,351.80
  6. Step 6: Final answer
    x = 16,965.29

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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.