Home / 25,145.20-37,739.40-11,126.80

Finding the Fourth Proportional to 25,145.20, 37,739.40 and 11,126.80

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Solution

The fourth proportional to 25,145.20, 37,739.40 and 11,126.80 is: 16,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,145.20 : 37,739.40 = 11,126.80 : x
  2. Step 2: Convert to fraction form
    25,145.20/37,739.40 = 11,126.80/x
  3. Step 3: Cross multiply
    25,145.20x = 37,739.40 × 11,126.80
  4. Step 4: Simplify right side
    25,145.20x = 419,918,755.92
  5. Step 5: Solve for x
    x = 419,918,755.92/25,145.20
  6. Step 6: Final answer
    x = 16,699.76

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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.