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Finding the Fourth Proportional to 12,777.80, 19,167.60 and 7,233.80

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Solution

The fourth proportional to 12,777.80, 19,167.60 and 7,233.80 is: 10,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.80 : 19,167.60 = 7,233.80 : x
  2. Step 2: Convert to fraction form
    12,777.80/19,167.60 = 7,233.80/x
  3. Step 3: Cross multiply
    12,777.80x = 19,167.60 × 7,233.80
  4. Step 4: Simplify right side
    12,777.80x = 138,654,584.88
  5. Step 5: Solve for x
    x = 138,654,584.88/12,777.80
  6. Step 6: Final answer
    x = 10,851.21

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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.