Home / 19,231.28-28,849.88-8,138.03

Finding the Fourth Proportional to 19,231.28, 28,849.88 and 8,138.03

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Solution

The fourth proportional to 19,231.28, 28,849.88 and 8,138.03 is: 12,208.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.28 : 28,849.88 = 8,138.03 : x
  2. Step 2: Convert to fraction form
    19,231.28/28,849.88 = 8,138.03/x
  3. Step 3: Cross multiply
    19,231.28x = 28,849.88 × 8,138.03
  4. Step 4: Simplify right side
    19,231.28x = 234,781,065.03
  5. Step 5: Solve for x
    x = 234,781,065.03/19,231.28
  6. Step 6: Final answer
    x = 12,208.29

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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.