Home / 12,009.90-18,015.78-3,244.68

Finding the Fourth Proportional to 12,009.90, 18,015.78 and 3,244.68

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Solution

The fourth proportional to 12,009.90, 18,015.78 and 3,244.68 is: 4,867.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,009.90 : 18,015.78 = 3,244.68 : x
  2. Step 2: Convert to fraction form
    12,009.90/18,015.78 = 3,244.68/x
  3. Step 3: Cross multiply
    12,009.90x = 18,015.78 × 3,244.68
  4. Step 4: Simplify right side
    12,009.90x = 58,455,441.05
  5. Step 5: Solve for x
    x = 58,455,441.05/12,009.90
  6. Step 6: Final answer
    x = 4,867.27

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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.