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Finding the Fourth Proportional to 15,067, 20,799.70 and 10,039.64

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Solution

The fourth proportional to 15,067, 20,799.70 and 10,039.64 is: 13,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067 : 20,799.70 = 10,039.64 : x
  2. Step 2: Convert to fraction form
    15,067/20,799.70 = 10,039.64/x
  3. Step 3: Cross multiply
    15,067x = 20,799.70 × 10,039.64
  4. Step 4: Simplify right side
    15,067x = 208,821,500.11
  5. Step 5: Solve for x
    x = 208,821,500.11/15,067
  6. Step 6: Final answer
    x = 13,859.53

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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.