Home / 21,183.35-31,754.37-10,087.06

Finding the Fourth Proportional to 21,183.35, 31,754.37 and 10,087.06

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Solution

The fourth proportional to 21,183.35, 31,754.37 and 10,087.06 is: 15,120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.35 : 31,754.37 = 10,087.06 : x
  2. Step 2: Convert to fraction form
    21,183.35/31,754.37 = 10,087.06/x
  3. Step 3: Cross multiply
    21,183.35x = 31,754.37 × 10,087.06
  4. Step 4: Simplify right side
    21,183.35x = 320,308,235.45
  5. Step 5: Solve for x
    x = 320,308,235.45/21,183.35
  6. Step 6: Final answer
    x = 15,120.75

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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.