Home / 10,622.85-15,936.18-4,379.40

Finding the Fourth Proportional to 10,622.85, 15,936.18 and 4,379.40

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Solution

The fourth proportional to 10,622.85, 15,936.18 and 4,379.40 is: 6,569.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,622.85 : 15,936.18 = 4,379.40 : x
  2. Step 2: Convert to fraction form
    10,622.85/15,936.18 = 4,379.40/x
  3. Step 3: Cross multiply
    10,622.85x = 15,936.18 × 4,379.40
  4. Step 4: Simplify right side
    10,622.85x = 69,790,906.69
  5. Step 5: Solve for x
    x = 69,790,906.69/10,622.85
  6. Step 6: Final answer
    x = 6,569.89

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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.