Home / 10,243.89-15,368.25-3,318.39

Finding the Fourth Proportional to 10,243.89, 15,368.25 and 3,318.39

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Solution

The fourth proportional to 10,243.89, 15,368.25 and 3,318.39 is: 4,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,243.89 : 15,368.25 = 3,318.39 : x
  2. Step 2: Convert to fraction form
    10,243.89/15,368.25 = 3,318.39/x
  3. Step 3: Cross multiply
    10,243.89x = 15,368.25 × 3,318.39
  4. Step 4: Simplify right side
    10,243.89x = 50,997,847.12
  5. Step 5: Solve for x
    x = 50,997,847.12/10,243.89
  6. Step 6: Final answer
    x = 4,978.37

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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.