Home / 28,309.88-39,067.65-15,734.62

Finding the Fourth Proportional to 28,309.88, 39,067.65 and 15,734.62

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Solution

The fourth proportional to 28,309.88, 39,067.65 and 15,734.62 is: 21,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.88 : 39,067.65 = 15,734.62 : x
  2. Step 2: Convert to fraction form
    28,309.88/39,067.65 = 15,734.62/x
  3. Step 3: Cross multiply
    28,309.88x = 39,067.65 × 15,734.62
  4. Step 4: Simplify right side
    28,309.88x = 614,714,627.04
  5. Step 5: Solve for x
    x = 614,714,627.04/28,309.88
  6. Step 6: Final answer
    x = 21,713.78

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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.