Home / 12,015.32-18,021.56-3,695.32

Finding the Fourth Proportional to 12,015.32, 18,021.56 and 3,695.32

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Solution

The fourth proportional to 12,015.32, 18,021.56 and 3,695.32 is: 5,542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.32 : 18,021.56 = 3,695.32 : x
  2. Step 2: Convert to fraction form
    12,015.32/18,021.56 = 3,695.32/x
  3. Step 3: Cross multiply
    12,015.32x = 18,021.56 × 3,695.32
  4. Step 4: Simplify right side
    12,015.32x = 66,595,431.10
  5. Step 5: Solve for x
    x = 66,595,431.10/12,015.32
  6. Step 6: Final answer
    x = 5,542.54

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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.