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Finding the Fourth Proportional to 13,174.95, 18,183.09 and 8,641.46

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Solution

The fourth proportional to 13,174.95, 18,183.09 and 8,641.46 is: 11,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.95 : 18,183.09 = 8,641.46 : x
  2. Step 2: Convert to fraction form
    13,174.95/18,183.09 = 8,641.46/x
  3. Step 3: Cross multiply
    13,174.95x = 18,183.09 × 8,641.46
  4. Step 4: Simplify right side
    13,174.95x = 157,128,354.00
  5. Step 5: Solve for x
    x = 157,128,354.00/13,174.95
  6. Step 6: Final answer
    x = 11,926.30

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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.