Home / 12,006.54-18,012.84-3,686.97

Finding the Fourth Proportional to 12,006.54, 18,012.84 and 3,686.97

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Solution

The fourth proportional to 12,006.54, 18,012.84 and 3,686.97 is: 5,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.54 : 18,012.84 = 3,686.97 : x
  2. Step 2: Convert to fraction form
    12,006.54/18,012.84 = 3,686.97/x
  3. Step 3: Cross multiply
    12,006.54x = 18,012.84 × 3,686.97
  4. Step 4: Simplify right side
    12,006.54x = 66,412,800.69
  5. Step 5: Solve for x
    x = 66,412,800.69/12,006.54
  6. Step 6: Final answer
    x = 5,531.39

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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.