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Finding the Fourth Proportional to 17,112.40, 25,687.80 and 10,190.80

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Solution

The fourth proportional to 17,112.40, 25,687.80 and 10,190.80 is: 15,297.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,112.40 : 25,687.80 = 10,190.80 : x
  2. Step 2: Convert to fraction form
    17,112.40/25,687.80 = 10,190.80/x
  3. Step 3: Cross multiply
    17,112.40x = 25,687.80 × 10,190.80
  4. Step 4: Simplify right side
    17,112.40x = 261,779,232.24
  5. Step 5: Solve for x
    x = 261,779,232.24/17,112.40
  6. Step 6: Final answer
    x = 15,297.63

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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.