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Finding the Fourth Proportional to 15,150.65, 20,906.51 and 11,173.95

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Solution

The fourth proportional to 15,150.65, 20,906.51 and 11,173.95 is: 15,419.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.65 : 20,906.51 = 11,173.95 : x
  2. Step 2: Convert to fraction form
    15,150.65/20,906.51 = 11,173.95/x
  3. Step 3: Cross multiply
    15,150.65x = 20,906.51 × 11,173.95
  4. Step 4: Simplify right side
    15,150.65x = 233,608,241.54
  5. Step 5: Solve for x
    x = 233,608,241.54/15,150.65
  6. Step 6: Final answer
    x = 15,419.03

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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.