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Finding the Fourth Proportional to 13,617.92, 18,794.49 and 7,649.59

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Solution

The fourth proportional to 13,617.92, 18,794.49 and 7,649.59 is: 10,557.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.92 : 18,794.49 = 7,649.59 : x
  2. Step 2: Convert to fraction form
    13,617.92/18,794.49 = 7,649.59/x
  3. Step 3: Cross multiply
    13,617.92x = 18,794.49 × 7,649.59
  4. Step 4: Simplify right side
    13,617.92x = 143,770,142.76
  5. Step 5: Solve for x
    x = 143,770,142.76/13,617.92
  6. Step 6: Final answer
    x = 10,557.42

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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.