Home / 12,086.20-18,128.08-3,322.40

Finding the Fourth Proportional to 12,086.20, 18,128.08 and 3,322.40

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Solution

The fourth proportional to 12,086.20, 18,128.08 and 3,322.40 is: 4,983.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.20 : 18,128.08 = 3,322.40 : x
  2. Step 2: Convert to fraction form
    12,086.20/18,128.08 = 3,322.40/x
  3. Step 3: Cross multiply
    12,086.20x = 18,128.08 × 3,322.40
  4. Step 4: Simplify right side
    12,086.20x = 60,228,732.99
  5. Step 5: Solve for x
    x = 60,228,732.99/12,086.20
  6. Step 6: Final answer
    x = 4,983.26

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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.