Home / 10,231.40-15,347.10-3,305.90

Finding the Fourth Proportional to 10,231.40, 15,347.10 and 3,305.90

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Solution

The fourth proportional to 10,231.40, 15,347.10 and 3,305.90 is: 4,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,231.40 : 15,347.10 = 3,305.90 : x
  2. Step 2: Convert to fraction form
    10,231.40/15,347.10 = 3,305.90/x
  3. Step 3: Cross multiply
    10,231.40x = 15,347.10 × 3,305.90
  4. Step 4: Simplify right side
    10,231.40x = 50,735,977.89
  5. Step 5: Solve for x
    x = 50,735,977.89/10,231.40
  6. Step 6: Final answer
    x = 4,958.85

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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.