Home / 12,042.92-18,057.78-3,720.68

Finding the Fourth Proportional to 12,042.92, 18,057.78 and 3,720.68

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Solution

The fourth proportional to 12,042.92, 18,057.78 and 3,720.68 is: 5,578.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.92 : 18,057.78 = 3,720.68 : x
  2. Step 2: Convert to fraction form
    12,042.92/18,057.78 = 3,720.68/x
  3. Step 3: Cross multiply
    12,042.92x = 18,057.78 × 3,720.68
  4. Step 4: Simplify right side
    12,042.92x = 67,187,220.89
  5. Step 5: Solve for x
    x = 67,187,220.89/12,042.92
  6. Step 6: Final answer
    x = 5,578.98

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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.