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Finding the Fourth Proportional to 13,673.73, 18,860.98 and 8,629.05

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Solution

The fourth proportional to 13,673.73, 18,860.98 and 8,629.05 is: 11,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.73 : 18,860.98 = 8,629.05 : x
  2. Step 2: Convert to fraction form
    13,673.73/18,860.98 = 8,629.05/x
  3. Step 3: Cross multiply
    13,673.73x = 18,860.98 × 8,629.05
  4. Step 4: Simplify right side
    13,673.73x = 162,752,339.47
  5. Step 5: Solve for x
    x = 162,752,339.47/13,673.73
  6. Step 6: Final answer
    x = 11,902.56

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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.