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Finding the Fourth Proportional to 15,673.82, 21,629.80 and 8,503.73

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Solution

The fourth proportional to 15,673.82, 21,629.80 and 8,503.73 is: 11,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.82 : 21,629.80 = 8,503.73 : x
  2. Step 2: Convert to fraction form
    15,673.82/21,629.80 = 8,503.73/x
  3. Step 3: Cross multiply
    15,673.82x = 21,629.80 × 8,503.73
  4. Step 4: Simplify right side
    15,673.82x = 183,933,979.15
  5. Step 5: Solve for x
    x = 183,933,979.15/15,673.82
  6. Step 6: Final answer
    x = 11,735.11

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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.