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Finding the Fourth Proportional to 13,599.54, 20,407.42 and 7,359.44

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Solution

The fourth proportional to 13,599.54, 20,407.42 and 7,359.44 is: 11,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.54 : 20,407.42 = 7,359.44 : x
  2. Step 2: Convert to fraction form
    13,599.54/20,407.42 = 7,359.44/x
  3. Step 3: Cross multiply
    13,599.54x = 20,407.42 × 7,359.44
  4. Step 4: Simplify right side
    13,599.54x = 150,187,183.04
  5. Step 5: Solve for x
    x = 150,187,183.04/13,599.54
  6. Step 6: Final answer
    x = 11,043.55

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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.