Home / 10,638.90-15,958.38-3,243.33

Finding the Fourth Proportional to 10,638.90, 15,958.38 and 3,243.33

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Solution

The fourth proportional to 10,638.90, 15,958.38 and 3,243.33 is: 4,865.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.90 : 15,958.38 = 3,243.33 : x
  2. Step 2: Convert to fraction form
    10,638.90/15,958.38 = 3,243.33/x
  3. Step 3: Cross multiply
    10,638.90x = 15,958.38 × 3,243.33
  4. Step 4: Simplify right side
    10,638.90x = 51,758,292.61
  5. Step 5: Solve for x
    x = 51,758,292.61/10,638.90
  6. Step 6: Final answer
    x = 4,865.00

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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.