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Finding the Fourth Proportional to 15,066, 20,791.08 and 8,778.38

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Solution

The fourth proportional to 15,066, 20,791.08 and 8,778.38 is: 12,114.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,066 : 20,791.08 = 8,778.38 : x
  2. Step 2: Convert to fraction form
    15,066/20,791.08 = 8,778.38/x
  3. Step 3: Cross multiply
    15,066x = 20,791.08 × 8,778.38
  4. Step 4: Simplify right side
    15,066x = 182,511,896.90
  5. Step 5: Solve for x
    x = 182,511,896.90/15,066
  6. Step 6: Final answer
    x = 12,114.16

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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.