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Finding the Fourth Proportional to 18,888.89, 26,067.77 and 10,933.88

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Solution

The fourth proportional to 18,888.89, 26,067.77 and 10,933.88 is: 15,089.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.89 : 26,067.77 = 10,933.88 : x
  2. Step 2: Convert to fraction form
    18,888.89/26,067.77 = 10,933.88/x
  3. Step 3: Cross multiply
    18,888.89x = 26,067.77 × 10,933.88
  4. Step 4: Simplify right side
    18,888.89x = 285,021,684.04
  5. Step 5: Solve for x
    x = 285,021,684.04/18,888.89
  6. Step 6: Final answer
    x = 15,089.39

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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.