Home / 10,491.53-15,723.32-3,911.09

Finding the Fourth Proportional to 10,491.53, 15,723.32 and 3,911.09

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Solution

The fourth proportional to 10,491.53, 15,723.32 and 3,911.09 is: 5,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.53 : 15,723.32 = 3,911.09 : x
  2. Step 2: Convert to fraction form
    10,491.53/15,723.32 = 3,911.09/x
  3. Step 3: Cross multiply
    10,491.53x = 15,723.32 × 3,911.09
  4. Step 4: Simplify right side
    10,491.53x = 61,495,221.45
  5. Step 5: Solve for x
    x = 61,495,221.45/10,491.53
  6. Step 6: Final answer
    x = 5,861.42

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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.