Home / 10,638.68-15,958.89-3,243.21

Finding the Fourth Proportional to 10,638.68, 15,958.89 and 3,243.21

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Solution

The fourth proportional to 10,638.68, 15,958.89 and 3,243.21 is: 4,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.68 : 15,958.89 = 3,243.21 : x
  2. Step 2: Convert to fraction form
    10,638.68/15,958.89 = 3,243.21/x
  3. Step 3: Cross multiply
    10,638.68x = 15,958.89 × 3,243.21
  4. Step 4: Simplify right side
    10,638.68x = 51,757,971.79
  5. Step 5: Solve for x
    x = 51,757,971.79/10,638.68
  6. Step 6: Final answer
    x = 4,865.08

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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.