Home / 12,007.79-18,011.22-3,687.38

Finding the Fourth Proportional to 12,007.79, 18,011.22 and 3,687.38

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Solution

The fourth proportional to 12,007.79, 18,011.22 and 3,687.38 is: 5,530.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.79 : 18,011.22 = 3,687.38 : x
  2. Step 2: Convert to fraction form
    12,007.79/18,011.22 = 3,687.38/x
  3. Step 3: Cross multiply
    12,007.79x = 18,011.22 × 3,687.38
  4. Step 4: Simplify right side
    12,007.79x = 66,414,243.60
  5. Step 5: Solve for x
    x = 66,414,243.60/12,007.79
  6. Step 6: Final answer
    x = 5,530.93

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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.