Home / 12,736.40-19,076.90-7,791.08

Finding the Fourth Proportional to 12,736.40, 19,076.90 and 7,791.08

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Solution

The fourth proportional to 12,736.40, 19,076.90 and 7,791.08 is: 11,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,736.40 : 19,076.90 = 7,791.08 : x
  2. Step 2: Convert to fraction form
    12,736.40/19,076.90 = 7,791.08/x
  3. Step 3: Cross multiply
    12,736.40x = 19,076.90 × 7,791.08
  4. Step 4: Simplify right side
    12,736.40x = 148,629,654.05
  5. Step 5: Solve for x
    x = 148,629,654.05/12,736.40
  6. Step 6: Final answer
    x = 11,669.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.