Home / 14,321.87-21,491.31-7,747.91

Finding the Fourth Proportional to 14,321.87, 21,491.31 and 7,747.91

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Solution

The fourth proportional to 14,321.87, 21,491.31 and 7,747.91 is: 11,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.87 : 21,491.31 = 7,747.91 : x
  2. Step 2: Convert to fraction form
    14,321.87/21,491.31 = 7,747.91/x
  3. Step 3: Cross multiply
    14,321.87x = 21,491.31 × 7,747.91
  4. Step 4: Simplify right side
    14,321.87x = 166,512,735.66
  5. Step 5: Solve for x
    x = 166,512,735.66/14,321.87
  6. Step 6: Final answer
    x = 11,626.47

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1.5x scale

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.