Home / 28,399.92-39,180.36-18,844.32

Finding the Fourth Proportional to 28,399.92, 39,180.36 and 18,844.32

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Solution

The fourth proportional to 28,399.92, 39,180.36 and 18,844.32 is: 25,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.92 : 39,180.36 = 18,844.32 : x
  2. Step 2: Convert to fraction form
    28,399.92/39,180.36 = 18,844.32/x
  3. Step 3: Cross multiply
    28,399.92x = 39,180.36 × 18,844.32
  4. Step 4: Simplify right side
    28,399.92x = 738,327,241.56
  5. Step 5: Solve for x
    x = 738,327,241.56/28,399.92
  6. Step 6: Final answer
    x = 25,997.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.