Home / 18,769.31-28,161.80-8,233.89

Finding the Fourth Proportional to 18,769.31, 28,161.80 and 8,233.89

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Solution

The fourth proportional to 18,769.31, 28,161.80 and 8,233.89 is: 12,354.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.31 : 28,161.80 = 8,233.89 : x
  2. Step 2: Convert to fraction form
    18,769.31/28,161.80 = 8,233.89/x
  3. Step 3: Cross multiply
    18,769.31x = 28,161.80 × 8,233.89
  4. Step 4: Simplify right side
    18,769.31x = 231,881,122.23
  5. Step 5: Solve for x
    x = 231,881,122.23/18,769.31
  6. Step 6: Final answer
    x = 12,354.27

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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.