Home / 12,015.20-18,010.65-5,446.10

Finding the Fourth Proportional to 12,015.20, 18,010.65 and 5,446.10

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Solution

The fourth proportional to 12,015.20, 18,010.65 and 5,446.10 is: 8,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.20 : 18,010.65 = 5,446.10 : x
  2. Step 2: Convert to fraction form
    12,015.20/18,010.65 = 5,446.10/x
  3. Step 3: Cross multiply
    12,015.20x = 18,010.65 × 5,446.10
  4. Step 4: Simplify right side
    12,015.20x = 98,087,800.97
  5. Step 5: Solve for x
    x = 98,087,800.97/12,015.20
  6. Step 6: Final answer
    x = 8,163.64

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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.