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Finding the Fourth Proportional to 17,131.80, 25,659.30 and 10,219.80

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Solution

The fourth proportional to 17,131.80, 25,659.30 and 10,219.80 is: 15,306.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,131.80 : 25,659.30 = 10,219.80 : x
  2. Step 2: Convert to fraction form
    17,131.80/25,659.30 = 10,219.80/x
  3. Step 3: Cross multiply
    17,131.80x = 25,659.30 × 10,219.80
  4. Step 4: Simplify right side
    17,131.80x = 262,232,914.14
  5. Step 5: Solve for x
    x = 262,232,914.14/17,131.80
  6. Step 6: Final answer
    x = 15,306.79

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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.