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Finding the Fourth Proportional to 18,954.45, 28,423.43 and 10,067.82

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Solution

The fourth proportional to 18,954.45, 28,423.43 and 10,067.82 is: 15,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.45 : 28,423.43 = 10,067.82 : x
  2. Step 2: Convert to fraction form
    18,954.45/28,423.43 = 10,067.82/x
  3. Step 3: Cross multiply
    18,954.45x = 28,423.43 × 10,067.82
  4. Step 4: Simplify right side
    18,954.45x = 286,162,002.19
  5. Step 5: Solve for x
    x = 286,162,002.19/18,954.45
  6. Step 6: Final answer
    x = 15,097.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.