Home / 28,481.64-39,305.28-15,906.36

Finding the Fourth Proportional to 28,481.64, 39,305.28 and 15,906.36

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Solution

The fourth proportional to 28,481.64, 39,305.28 and 15,906.36 is: 21,951.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,481.64 : 39,305.28 = 15,906.36 : x
  2. Step 2: Convert to fraction form
    28,481.64/39,305.28 = 15,906.36/x
  3. Step 3: Cross multiply
    28,481.64x = 39,305.28 × 15,906.36
  4. Step 4: Simplify right side
    28,481.64x = 625,203,933.58
  5. Step 5: Solve for x
    x = 625,203,933.58/28,481.64
  6. Step 6: Final answer
    x = 21,951.12

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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.