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Finding the Fourth Proportional to 16,839.70, 25,231.20 and 13,316.20

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Solution

The fourth proportional to 16,839.70, 25,231.20 and 13,316.20 is: 19,951.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,839.70 : 25,231.20 = 13,316.20 : x
  2. Step 2: Convert to fraction form
    16,839.70/25,231.20 = 13,316.20/x
  3. Step 3: Cross multiply
    16,839.70x = 25,231.20 × 13,316.20
  4. Step 4: Simplify right side
    16,839.70x = 335,983,705.44
  5. Step 5: Solve for x
    x = 335,983,705.44/16,839.70
  6. Step 6: Final answer
    x = 19,951.88

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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.