Home / 12,042.90-18,057.62-3,720.56

Finding the Fourth Proportional to 12,042.90, 18,057.62 and 3,720.56

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Solution

The fourth proportional to 12,042.90, 18,057.62 and 3,720.56 is: 5,578.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.90 : 18,057.62 = 3,720.56 : x
  2. Step 2: Convert to fraction form
    12,042.90/18,057.62 = 3,720.56/x
  3. Step 3: Cross multiply
    12,042.90x = 18,057.62 × 3,720.56
  4. Step 4: Simplify right side
    12,042.90x = 67,184,458.67
  5. Step 5: Solve for x
    x = 67,184,458.67/12,042.90
  6. Step 6: Final answer
    x = 5,578.76

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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.