Home / 12,179.90-18,270.76-3,860.56

Finding the Fourth Proportional to 12,179.90, 18,270.76 and 3,860.56

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Solution

The fourth proportional to 12,179.90, 18,270.76 and 3,860.56 is: 5,791.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.90 : 18,270.76 = 3,860.56 : x
  2. Step 2: Convert to fraction form
    12,179.90/18,270.76 = 3,860.56/x
  3. Step 3: Cross multiply
    12,179.90x = 18,270.76 × 3,860.56
  4. Step 4: Simplify right side
    12,179.90x = 70,535,365.23
  5. Step 5: Solve for x
    x = 70,535,365.23/12,179.90
  6. Step 6: Final answer
    x = 5,791.13

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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.