Home / 12,184.68-18,273.78-3,420.12

Finding the Fourth Proportional to 12,184.68, 18,273.78 and 3,420.12

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Solution

The fourth proportional to 12,184.68, 18,273.78 and 3,420.12 is: 5,129.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.68 : 18,273.78 = 3,420.12 : x
  2. Step 2: Convert to fraction form
    12,184.68/18,273.78 = 3,420.12/x
  3. Step 3: Cross multiply
    12,184.68x = 18,273.78 × 3,420.12
  4. Step 4: Simplify right side
    12,184.68x = 62,498,520.45
  5. Step 5: Solve for x
    x = 62,498,520.45/12,184.68
  6. Step 6: Final answer
    x = 5,129.27

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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.