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Finding the Fourth Proportional to 18,719.70, 28,067.55 and 8,846.10

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Solution

The fourth proportional to 18,719.70, 28,067.55 and 8,846.10 is: 13,263.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.70 : 28,067.55 = 8,846.10 : x
  2. Step 2: Convert to fraction form
    18,719.70/28,067.55 = 8,846.10/x
  3. Step 3: Cross multiply
    18,719.70x = 28,067.55 × 8,846.10
  4. Step 4: Simplify right side
    18,719.70x = 248,288,354.06
  5. Step 5: Solve for x
    x = 248,288,354.06/18,719.70
  6. Step 6: Final answer
    x = 13,263.48

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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.