Home / 13,321.44-18,385.92-7,732.80

Finding the Fourth Proportional to 13,321.44, 18,385.92 and 7,732.80

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Solution

The fourth proportional to 13,321.44, 18,385.92 and 7,732.80 is: 10,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.44 : 18,385.92 = 7,732.80 : x
  2. Step 2: Convert to fraction form
    13,321.44/18,385.92 = 7,732.80/x
  3. Step 3: Cross multiply
    13,321.44x = 18,385.92 × 7,732.80
  4. Step 4: Simplify right side
    13,321.44x = 142,174,642.18
  5. Step 5: Solve for x
    x = 142,174,642.18/13,321.44
  6. Step 6: Final answer
    x = 10,672.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.